Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b7d938096363cf…

MALICIOUS

PDF

24.1 KB
MD5: 43a5cf4e0f3a8f90fa54ea3d53837ca2 SHA-1: a5ce90b913ea43e6584f9a588589e21e0b751965 SHA-256: c3b7d938096363cfa34df845e2f533fbe28d433bef628af2592d0ed5927eb3bd
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment T1190 Exploit Public-Facing Application

The sample is a PDF document that utilizes an XFA form, which is known to be a vector for exploits. Specifically, the 'CVE_2010_0188' heuristic firing indicates exploitation of the LibTIFF vulnerability in Adobe Reader. ClamAV also detected this as 'Pdf.Exploit.Agent-36821'. The embedded URL, while not directly malicious in this context, is part of the XFA template structure.

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/