Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2766e0412bf99e…

MALICIOUS

PDF

29.2 KB
MD5: 33e279a98c438c3f3c67efb1d1cfcf11 SHA-1: 703e40543719eacd70c18983e3bc4866b10af3f1 SHA-256: ac2766e0412bf99e6398784b0173cb20dfb805927f3a2b9d02960e0cb13139fc
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by ML and ClamAV as malicious, specifically identifying it as a JavaScript exploit. The presence of an XFA form suggests an attempt to leverage form functionality for malicious purposes. The embedded URL, while seemingly benign, is likely part of the exploit chain. The document body contains obfuscated JavaScript, indicating an attempt to execute malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://www.xfa.org/schema/xfa-template/2.5/

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