Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b86da39d0da8b8…

MALICIOUS

PDF

24.1 KB
MD5: 9b8cd6a88cb377335d4031b1656393fa SHA-1: f4b029b26888f092271ef1ca24b1962ff53f0959 SHA-256: 96b86da39d0da8b82f9af4f41f419a58be2ede216eb15bdd0c5488f18abb4045
130 Risk Score

Malware Insights

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

The sample is a PDF file that contains an XFA form and triggers the critical heuristic CVE_2010_0188, indicating exploitation of a known Adobe Reader vulnerability. ClamAV also detected it as Pdf.Exploit.Agent-36821. The embedded URL, while not directly malicious in reputation, is associated with XFA templates and may be used in the exploit chain. The exploit likely leads to the execution of 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/