Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a38886cd17b59e…

MALICIOUS

PDF

31.8 KB
MD5: 3d2b05b3d6e8763c8b055fd93c14f04e SHA-1: bf9a735826452eebea40b3b1a5f52c5edb90dfbc SHA-256: 78a38886cd17b59ea4379169410318d7d59fe86867a67e3116133bdcd52b5caa
70 Risk Score

Malware Insights

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

The PDF file utilizes XFA forms, a known vector for exploits. ClamAV detected it as Js.Exploit.HTML-30, indicating a JavaScript-based exploit. The embedded script contains JavaScript code that appears to be obfuscated but is likely intended to download and execute a second-stage payload. The presence of an embedded URL further supports this delivery mechanism.

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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