Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72ab86c4f384ca7…

MALICIOUS

PDF

23.9 KB
MD5: 744c45ac4106140e207b1cb73b7e83e1 SHA-1: 5a379f51de3d47f4d68db36778a5103c72f11d8a SHA-256: b72ab86c4f384ca716577713680f745080f5f282db33a0377325c63d17bbe0e2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file identified as malicious by ClamAV and exhibits critical heuristic firings for CVE-2010-0188, an Adobe Reader LibTIFF XFA exploit. The presence of XFA form elements and the specific exploit detection strongly indicate that this PDF is designed to achieve arbitrary code execution. The embedded URL, while seemingly benign, is likely part of the exploit chain or a fallback. No scripts were extracted, but the exploit itself is the primary mechanism for delivering a payload.

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.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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/