Malicious PDF — malware analysis report

Static analysis result for SHA-256 e938a7f3248a3d20…

MALICIOUS

PDF

31.5 KB
MD5: ca9cbff8ce34001bd6531f62418b6665 SHA-1: 802b1c490eb1c448621c4353d4e8197b672a1988 SHA-256: e938a7f3248a3d2052db1fb29351a6c084749781780abc67fae089d341c46943
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically identifying it as a JavaScript exploit. The presence of an XFA form suggests an attempt to leverage vulnerabilities within the form processing. The embedded URL is likely used to download and execute a second-stage payload.

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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