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HTPBE?

Structural PDF tamper detection API. Catches edits your KYC stack misses.

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© 2024–2026 TMI Iurii Rogulia · VAT ID: FI29845875 · Made in Finland 🇫🇮

Status

Algorithm v2.34.4

Tool profile

macOS Print to PDF

macOS Print to PDF appears on both legitimate first-generation output and downstream re-save flows — context (the other tool on the same document) is what flips the signal.

Back to all statistics
Forensic verdict

Mixed signal

Based on this tool’s share of the HTPBE? corpus.

Modification rate
64%+16pp above baseline
Corpus baseline: 48%
Corpus share
3.5%
Share of all analyzed appearances
Modification rate
64%
+16pp above baseline
Role split
0%C/100%P
Creator vs Producer share of appearances

Corpus profile

How macOS Print to PDF shows up in HTPBE? corpus

macOS Print to PDF is the system-level PDF generator built into macOS’s print pipeline (the "Save as PDF" option in any Print dialog). Almost every Mac-originated PDF that did not come from a dedicated authoring app passes through this path.

macOS Print to PDF appears overwhelmingly on Mac-authored documents and is among the highest-volume producers in the HTPBE? corpus. It is a low-signal producer for tampering — the document was rendered by a Mac in one pass.

The signal
macOS Print to PDF appears overwhelmingly on Mac-authored documents and is among the highest-volume producers in the HTPBE? corpus.

Role in the workflow

How macOS Print to PDF shows up in metadata

Every PDF carries a Creator (the application that produced the original document) and a Producer (the engine that wrote the PDF). The same tool can appear in either slot, with very different modification profiles.

CAs Creator · 0%
As Producer · 100%P
CAs Creator
  • Share of appearances
    0%
  • Modification rate
    0%
PAs Producer
  • Share of appearances
    100%
  • Modification rate
    64%
  • Avg file size
    952 KB

How to read this

The Creator slot typically reflects where a document started life. The Producer slot reflects whatever wrote the bytes — and is the field that gets overwritten when a PDF is opened, edited, and saved by a downstream tool.

A higher modification rate as Producer than as Creator usually means the tool is acting as a re-saver on documents that originated elsewhere. A higher rate as Creator points to fragile workflows around the original authoring app.

Name fingerprints

Also goes by

Different version strings and spellings observed for macOS Print to PDF in the wild. All are merged into the same canonical profile.

macOS Version 26.3.1 (a) (Build 25D771280a) Quartz PDFContext32.9%
macOS Version 12.7.6 (Build 21H1320) Quartz PDFContext, AppendMode 1.116.0%
macOS Version 12.7.6 (Build 21H1320) Quartz PDFContext14.1%
macOS Version 26.2 (Build 25C56) Quartz PDFContext, AppendMode 1.19.0%
macOS Version 15.3.2 (Build 24D81) Quartz PDFContext7.1%
macOS Version 10.15.7 (Build 19H1922) Quartz PDFContext6.9%
macOS Version 26.3.1 (Build 25D2128) Quartz PDFContext1.0%
macOS Version 15.7.1 (Build 24G231) Quartz PDFContext0.6%
macOS Version 13.3.1 (a) (Build 22E772610a) Quartz PDFContext, AppendMode 1.10.5%
macOS Version 26.4.1 (Build 25E253) Quartz PDFContext0.5%
Mac OS X 10.10.5 Quartz PDFContext0.5%
macOS Version 26.2 (Build 25C56) Quartz PDFContext0.5%
macOS Version 26.1 (Build 25B78) Quartz PDFContext0.4%
macOS Version 15.6.1 (Build 24G90) Quartz PDFContext0.4%
macOS Version 15.7.4 (Build 24G517) Quartz PDFContext0.4%
macOS Version 26.5.1 (Build 25F80) Quartz PDFContext0.4%
macOS Version 14.3 (Build 23D2057) Quartz PDFContext0.4%
macOS Version 15.7.5 (Build 24G624) Quartz PDFContext, AppendMode 1.10.4%
macOS Version 14.6 (Build 23G80) Quartz PDFContext, AppendMode 1.10.3%
macOS Version 14.8.4 (Build 23J319) Quartz PDFContext0.3%
macOS Version 15.6.1 (Build 24G90) Quartz PDFContext, AppendMode 1.10.3%
macOS 版本26.3(版号25D125) Quartz PDFContext0.3%
macOS Version 13.7.8 (Build 22H730) Quartz PDFContext0.3%
macOS Version 14.5 (Build 23F79) Quartz PDFContext0.3%
macOS 10.15.719H15 Quartz PDFContext; modified using OpenPDF 1.3.300.3%
macOS Version 10.15.4 (Build 19E287) Quartz PDFContext0.3%
macOS Version 15.3 (Build 24D2059) Quartz PDFContext0.3%
macOS Version 26.2 (assemblage 25C56) Quartz PDFContext0.3%
macOS Version 15.7.3 (Build 24G419) Quartz PDFContext0.3%
macOS Version 26.3.1 (Build 25D2128) Quartz PDFContext, AppendMode 1.10.3%
macOS Version 15.7.4 (assemblage 24G517) Quartz PDFContext0.3%
macOS Version 15.5 (Build 24F74) Quartz PDFContext0.3%
macOS Version 26.1 (Build 25B78) Quartz PDFContext, AppendMode 1.10.3%
macOS Version 26.5 (Build 25F71) Quartz PDFContext0.3%
macOS Version 14.6.1 (Build 23G93) Quartz PDFContext, AppendMode 1.10.1%
macOS Versione 15.6.1 (Build 24G90) Quartz PDFContext; modified using iText® 5.5.13.2 ©2000-2020 iText Group NV (AGPL-version)0.1%
macOS Version 26.0.1 (Build 25A362) Quartz PDFContext0.1%
macOS 版本15.6(版号24G84) Quartz PDFContext0.1%
macOS Versión 13.7.8 (Compilación 22H730) Quartz PDFContext0.1%
macOS Version 14.3 (Build 23D2057) Quartz PDFContext, AppendMode 1.10.1%
macOS Versión 13.5.1 (Compilación 22G90) Quartz PDFContext0.1%
macOS Version 14.4 (Build 23E214) Quartz PDFContext0.1%
macOS Версия 14.5 (Выпуск 23F79) Quartz PDFContext0.1%
macOS Version 10.16 (Build 21H1320) Quartz PDFContext0.1%
macOS Version 12.5 (Build 21G72) Quartz PDFContext, AppendMode 1.10.1%
macOS Version 14.0 (Build 23A344) Quartz PDFContext0.1%
macOS Version 15.6 (Build 24G84) Quartz PDFContext0.1%
Mac OS X 10.6.7 Quartz PDFContext0.1%
macOS 版本15.7.3(版号24G419) Quartz PDFContext0.1%
macOS Version 26.3 (Build 25D125) Quartz PDFContext0.1%
macOS Version 10.16 (Build 21G725) Quartz PDFContext0.1%
macOS Version 15.6 (assemblage 24G84) Quartz PDFContext, AppendMode 1.10.1%
macOS Version 15.4 (Build 24E248) Quartz PDFContext0.1%
macOS Version 11.3.1 (Build 20E241) Quartz PDFContext; modified using iText® 5.5.5 ©2000-2014 iText Group NV (AGPL-version)0.1%
macOS Version 15.7.3 (Build 24G419) Quartz PDFContext, AppendMode 1.10.1%
macOS Version 13.5 (Build 22G74) Quartz PDFContext, AppendMode 1.10.1%
macOS Version 14.2.1 (Build 23C71) Quartz PDFContext0.1%
macOS Version 15.4.1 (Build 24E263) Quartz PDFContext, AppendMode 1.10.1%
macOS Version 15.4.1 (Build 24E263) Quartz PDFContext0.1%
macOS Version 15.2 (Build 24C101) Quartz PDFContext0.1%
macOS Versione 14.0 (Build 23A344) Quartz PDFContext0.1%
macOS Version 15.5 (Build 24F74) Quartz PDFContext, AppendMode 1.10.1%
macOS Version 14.3.1 (Build 23D60) Quartz PDFContext0.1%
macOS Version 15.6 (Build 24G84) Quartz PDFContext, AppendMode 1.10.1%

Why variants matter

The same tool publishes itself under 64 different metadata strings — version bumps, locale tags, build IDs. We canonicalize them so the corpus reflects one identity, not noise.

Most common
macOS Version 26.3.1 (a) (Build 25D771280a) Quartz PDFContext
32.9% of appearances
Variant spread
64 distinct strings
Long-tail share: 67.1%
Observed range
27.04.2011 → 08.07.2026

Distributions

What ships alongside macOS Print to PDF

The PDF versions macOS Print to PDF writes when acting as Producer, and the other tools that appear in the same documents.

PDF versions written

Most output is PDF 1.3 (88% of files where macOS Print to PDF is the Producer).

PDF 1.387.9%
PDF 1.710.9%
PDF 1.60.7%
PDF 1.40.4%
PDF 1.50.1%

Common Creators when macOS Print to PDF is the Producer

Preview sits upstream in 22% of cases — read this row as “what kinds of documents end up routed through macOS Print to PDF.”

Preview22.2%
PandaDoc19.5%
ActiveReports18.7%
Microsoft Word10.6%
Aspose10.3%
Chrome (Print to PDF)8.2%
TCPDF8.1%
Pages1.0%
Firefox0.6%
Adobe Acrobat0.6%

Related profiles

Tools you’ll see next to macOS Print to PDF

Other tools that frequently share metadata with macOS Print to PDF in the same documents. Each card links to its own forensic profile.

C19% co-occurrence
Preview
Corpus share0.7%
Mod rate93%
C17% co-occurrence
PandaDoc
Corpus share0.6%
Mod rate5%
C16% co-occurrence
ActiveReports
Corpus share2.5%
Mod rate100%
C9% co-occurrence
Microsoft Word
Corpus share9.9%
Mod rate79%
C9% co-occurrence
Aspose
Corpus share4.0%
Mod rate39%

Long tail

Notable observations

Smaller cuts of the macOS Print to PDF corpus — useful context, but treat each row as a single data point rather than a strong signal.

Embedded JavaScript
<1%

Of files contain JavaScript code

Digitally signed
<1%

Of files carry at least one digital signature

Avg pages per document
8.5
Oldest observed
27.04.2011 — about 15 years ago

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