Forensic check

HTPBE_BURNED_IN_ANNOTATIONS

HTPBE_BURNED_IN_ANNOTATIONS appears on <0.1% of modified results in our corpus. A marker is evidence about the file, not a judgement about the person who sent it.

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Marker profile

Content Stream Analysis

Annotations that appear merged into the page content.

Share of modified results
<0.1%
Frequency rank
#52
Among the 56 markers seen in modified results
Certain confidence
100.0%
Of results with this marker rated certain rather than high
Fires alone
0%
Results where it is the only marker found

Marker profile

What HTPBE_BURNED_IN_ANNOTATIONS tells you

HTPBE_BURNED_IN_ANNOTATIONS is one of the named findings returned in modification_markers when a PDF is reported as modified. It belongs to the Content Stream Analysis group of checks. These checks look at the content of the pages themselves for signs of edits made after the document was authored.

On 0% of the modified results that carry HTPBE_BURNED_IN_ANNOTATIONS it is the only marker. A result with this marker carries 3.3 markers on average. It is most often found together with HTPBE_DATES_DISAGREE, on 100.0% of these results.

Example API response

How it appears in a result

When a PDF is reported as modified, HTPBE_BURNED_IN_ANNOTATIONS is listed in modification_markers next to the verdict and its confidence. Each marker is a named, actionable finding – not a score.

GET /api/v1/result/{id}
{
  "id": "9f3a2c1d-8b47-4e6f-a012-3d5e7f890123",
  "status": "modified",
  "modification_confidence": "high",
  "modification_markers": [
    "HTPBE_BURNED_IN_ANNOTATIONS"
  ],
  "creator": "Adobe Acrobat Pro DC",
  "has_incremental_updates": true,
  "page_count": 3
}

Full schema in the API reference →

Distributions

What ships alongside HTPBE_BURNED_IN_ANNOTATIONS

The tools, formats and document traits that appear on the modified results carrying this marker. Shares are of those results.

Often found together with

HTPBE_DATES_DISAGREE sits next to HTPBE_BURNED_IN_ANNOTATIONS more often than any other marker.

Confidence of the verdict

Certain100.0%

When these results were checked

May 202633.3%
August 202633.3%
October 202633.3%

Document length

2–5 pages100.0%

File size

100 KB – 1 MB66.7%
1 – 5 MB33.3%

Year the document says it was created

2026100.0%

Long tail

Notable observations

Smaller cuts of the results carrying HTPBE_BURNED_IN_ANNOTATIONS – useful context, but treat each row as a single data point rather than a strong signal.

Digitally signed
0%

Of files carry at least one digital signature

Saved revisions
0%

Of files contain earlier saved revisions

Embedded JavaScript
33.3%

Of files contain JavaScript code

Embedded files
0%

Of files have attachments inside

Avg pages per document
3.0
Markers per result
3.3

Average number of markers on these results

FAQ

HTPBE_BURNED_IN_ANNOTATIONS: common questions

What does HTPBE_BURNED_IN_ANNOTATIONS mean?

HTPBE_BURNED_IN_ANNOTATIONS is a named finding in an HTPBE? result: annotations that appear merged into the page content. It is returned in the modification_markers list of a modified result and belongs to the Content Stream Analysis group of checks.

Does HTPBE_BURNED_IN_ANNOTATIONS mean the document is fake?

No. A marker is evidence about the file, not a judgement about the person who sent it. It records that the file shows this pattern; it does not say why, and it does not assess what the document states. Read it together with the verdict and any other markers on the same result.

What should I do when a result contains HTPBE_BURNED_IN_ANNOTATIONS?

Ask the sender for the original file straight from the issuing system, or request a fresh copy from the issuer. Check whether the document went through a later step such as re-saving, merging or converting, and verify it with the issuer before relying on it for a decision.

How common is HTPBE_BURNED_IN_ANNOTATIONS?

HTPBE_BURNED_IN_ANNOTATIONS appears on <0.1% of the modified results in the HTPBE? corpus. The corpus consists of PDFs people chose to submit for checking, so it skews towards documents someone had a reason to doubt and is not a sample of all PDFs.

Where do I see HTPBE_BURNED_IN_ANNOTATIONS?

In the modification_markers list of the result returned by the HTPBE? API, and on the result page of a modified document. Other checks in the Content Stream Analysis group are listed below on this page; all 63 checks are listed on the how-it-works page.

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