Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b2a88255a02ef6…

MALICIOUS

PDF

24.2 KB
MD5: d6c889fcc0157041deee294592ae764c SHA-1: 8d2637d3d8f948b02e48130bae2d37d0084636b5 SHA-256: a3b2a88255a02ef6b7da8f7d8cf4e3ca01c3bffd4f6c8c1007a54880ee1457f4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter T1059.001 PowerShell

The sample is a PDF document identified as malicious by ClamAV and exhibits characteristics of an exploit. Specifically, the 'CVE_2010_0188' heuristic indicates the exploitation of a LibTIFF vulnerability within Adobe Reader's XFA forms. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit to download a secondary payload. The XFA form structure itself is a common vector for such exploits.

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/