Malicious PDF — malware analysis report

Static analysis result for SHA-256 46644a055602b80b…

MALICIOUS

PDF

34.9 KB
MD5: 13118f7a43418bcb0af04ffdb25fa30b SHA-1: fec1685306ee01005dc844a13cdec1d6b123b463 SHA-256: 46644a055602b80b613b99475cf99eed295671a7af22f9fdbe865a89906d739d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting JavaScript exploits. The presence of an XFA form suggests an attempt to leverage form functionality for malicious purposes. The embedded URL, while seemingly benign, is 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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