Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb189c1bed8d5fc7…

MALICIOUS

PDF

28.1 KB
MD5: 394d8626996dad8257a99544b0a920ec SHA-1: 29164ac0a1c9c2792d2b15ed851cb721e285affb SHA-256: cb189c1bed8d5fc7bb75d6d4d11ea45d82fcabd5ef2813bec7289fd0c1a19ee9
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged as malicious by a machine learning classifier and ClamAV with the signature Js.Exploit.HTML-30, indicating it likely contains embedded JavaScript exploits. The presence of an XFA form and an embedded URL further supports this. The embedded URL is likely part of the exploit chain.

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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