Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26cafe10bc1b6b5…

MALICIOUS

PDF

24.1 KB
MD5: 8ce9f0ef0a901d933584ac95e2105af4 SHA-1: fb8f221bc3cb7f432931837bb7ce03ad6f71372b SHA-256: c26cafe10bc1b6b597089db263d43dcb7f3a51e7af886e06e65de24f68b71b9b
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1566.001 Phishing: Spearphishing Attachment

The file is a PDF document that utilizes XFA forms, triggering critical heuristics for CVE-2010-0188, an Adobe Reader exploit. ClamAV also detected it as malicious. The embedded URL, while seemingly benign, is part of the XFA structure and likely used in the exploit chain. The exploit targets the LibTIFF component within Adobe Reader, indicating a client-side execution attack.

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • ClamAV: Pdf.Exploit.Agent-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • 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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