Malicious PDF — malware analysis report

Static analysis result for SHA-256 c23b05304008b46f…

MALICIOUS

PDF

30.9 KB
MD5: 12132d5e905fe2ae639edacb8a0fe73e SHA-1: b431c5d9df7cd5be819b986ba020c1c01695d842 SHA-256: c23b05304008b46f9b8e072fe0a8056efc4eac9ff7b9ef4b2a757da44847dbd7
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF utilizes XFA forms, a known vector for exploitation. ClamAV detected it as Js.Exploit.HTML-30, indicating JavaScript-based exploitation. The embedded URL, while seemingly benign, is part of the exploit chain. The ML classifier strongly flags this PDF as malicious.

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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