Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7a627dc952cc34…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 874117d325cc97121d5ceb8b37498239 SHA-1: 1274bd8e4a804bde80aaba1a297f71e623e4fca6 SHA-256: af7a627dc952cc3425a9b364c818e4c1c19f284a126fe7f3426c9995dc687f3d
110 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file exhibits multiple heuristic firings indicating suspicious content, specifically an embedded script payload. This suggests the document is designed to deliver a secondary malicious component. The embedded file, while not directly analyzed for its content, further supports the likelihood of a multi-stage attack. The primary attack vector appears to be leveraging the PDF's ability to host and execute scripts.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream info PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/1.0\ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 13006 bytes
SHA-256: bcf67171762f6afc6267ea46646b5d5b13a8f123cc9a8921dff7e0c436113891

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