Malicious PDF — malware analysis report

Static analysis result for SHA-256 066ae8e86090af9f…

MALICIOUS

PDF

24.1 KB
MD5: bbd96eb7095f8cc7e32e31be58b4346f SHA-1: 4dc1d7cc9e970081144d4f88a8a8c346d6877661 SHA-256: 066ae8e86090af9f76f5f1f47d36569f52bae7352faa0e83cb40943ef29885d4
162 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PDF file identified as malicious by multiple heuristics, including critical firings for CVE-2010-0188 (LibTIFF XFA image exploit) and a general ML classifier. The presence of XFA form elements and the specific CVE indicate an attempt to exploit a known vulnerability in Adobe Reader to achieve code execution. The embedded URL, while likely benign on its own, is associated with the XFA schema and may be part of the exploit chain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/