Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f14c2d268af132…

MALICIOUS

PDF

31.7 KB
MD5: 0697a98b96d3028fb1d5dba12b3b86fe SHA-1: 493c8956eff8aee6e9e3eddf12015eb1535f6f7d SHA-256: 45f14c2d268af132c685c54155078185ebafae9b0f2e9e861e80c5a6972a6616
100 Risk Score

Malware Insights

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

The PDF utilizes XFA forms, a known vector for exploits. ClamAV detected it as Js.Exploit.HTML-30, indicating embedded JavaScript is likely used for exploitation. The embedded URL points to an XFA schema, further supporting this. The ML classifier also strongly flagged this PDF as malicious. The script's intent is 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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