Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aeddfe78f3efe77…

MALICIOUS

PDF

24.1 KB
MD5: a89e0899074f65f731f4fd909808b855 SHA-1: c075b243c3adc7d1d9062f8065e5c1c2a06a1c2f SHA-256: 3aeddfe78f3efe77042ccbdad140d64af59931d793120a382337a7a638cbe034
130 Risk Score

Malware Insights

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

The sample is a PDF file that leverages XFA forms to exploit CVE-2010-0188, a known vulnerability in Adobe Reader. The heuristic firings indicate that the XFA payload was decoded from a raw stream, suggesting it's designed to execute malicious code. The embedded URL, while seemingly benign, is part of the XFA structure and could be used to fetch additional components or confirm exploitation.

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/