Malicious PDF — malware analysis report

Static analysis result for SHA-256 521211dbd16a4a22…

MALICIOUS

PDF

28.1 KB
MD5: af24c6e2241e20a8efb391734c14c4a8 SHA-1: 800b45a19bcf3d0c0e95d7f42c9b8c47cecd6b60 SHA-256: 521211dbd16a4a223fb33accef056f2d1cde7c0523b98aba7d81783905660665
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by a machine learning classifier and ClamAV with the signature Js.Exploit.HTML-30. It contains an embedded URL and utilizes XFA forms, indicating a likely exploit attempt. The presence of JavaScript, though obfuscated, suggests the execution of malicious code to compromise the user.

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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