Malicious PDF — malware analysis report

Static analysis result for SHA-256 f909c29debef5572…

MALICIOUS

PDF

4.2 KB First seen: 2026-05-08
MD5: 4fbbbc1e1d9e6b42d8922d6781bba13f SHA-1: 2e04d2c3eb75e0ef0640b0cbe80570f66ad8a84f SHA-256: f909c29debef5572faaab716cccf5dce9aea23be9e254aa61b536546a6b7cb6e
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file exhibits characteristics of containing an embedded script payload, indicated by heuristic firings such as PDF_EMBEDDED_SCRIPT_PAYLOAD. While the document body is unreadable, the presence of an embedded script strongly suggests an attempt to execute malicious code upon opening or interaction. The embedded file itself is a potential indicator of a secondary stage payload.

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 12861 bytes
SHA-256: 4057edeaf9830874cb4918b9705b13fa46bb9de216856b7f42daf68d4eb229a2

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