Malicious PDF — malware analysis report

Static analysis result for SHA-256 0362f01f7f3da35e…

MALICIOUS

PDF

31.9 KB
MD5: 22177249a5729af28e9f7571865c2a9b SHA-1: de343f82e08b893fe239a400e58b4d09aac7d89b SHA-256: 0362f01f7f3da35ec6e72523508567a45de4db32483d8c79c400957842e093dd
102 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier, specifically triggering a JavaScript exploit. The embedded URL, while seemingly benign, is associated with XFA forms which are known to be exploited. The document body contains obfuscated JavaScript code that likely attempts to download and execute a second-stage payload.

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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