Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd0bc33690a85ed…

MALICIOUS

PDF

24.2 KB
MD5: f91e1a1ce7e822b8d6668c6d5dc404ca SHA-1: e5335868fec6caa0e08b5223d1d06ab8233def68 SHA-256: 9dd0bc33690a85ed717b94925ab1594e08ed6b622eb1aa00a854a514366c5b81
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file identified as malicious by ClamAV and exhibits characteristics of an XFA form. Critical heuristics indicate exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded URL, while not directly malicious in reputation, is part of the XFA structure. The obfuscated JavaScript within the DOC BODY section, when decoded, appears to be part of the exploit mechanism, likely responsible for downloading and executing a second-stage 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.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/