Malicious PDF — malware analysis report

Static analysis result for SHA-256 8370a07b3d2aaf8c…

MALICIOUS

PDF

28.3 KB
MD5: 3db5c9f2a126f07219f9626d8157f872 SHA-1: ea702ac4f8c6c70ef365f9677afdc47a47a65ff7 SHA-256: 8370a07b3d2aaf8c547c8b6725c866e3b6ce5b4dc7fe9c491e394a14b423b66f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically detecting embedded JavaScript exploiting XFA forms. The embedded JavaScript is likely responsible for executing the malicious payload, as indicated by the 'Js.Exploit.HTML-30' detection. The presence of an embedded URL suggests a potential download or redirection mechanism.

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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