Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d59d3f761a080d…

MALICIOUS

PDF

28.1 KB
MD5: 114887a10ce4d5ee635b3dec038cda94 SHA-1: fbc923dd15f452eef3514c53165f40cfbf98da74 SHA-256: 18d59d3f761a080d1927c4b4bae521c06f35d84aade506c82408ef48a9a59e65
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, with specific heuristics indicating the use of XFA forms. The embedded JavaScript, although obfuscated, is typical for downloading and executing further stages of malware. The presence of an embedded URL further supports this malicious intent.

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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