Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc8212509c7f027…

MALICIOUS

PDF

24.1 KB
MD5: a7d4c1e6ac401f4313446ebefa15505d SHA-1: 2ad120e24effcb3847b12c8439d0e1af0ef2f5ee SHA-256: 4bc8212509c7f027d7085e8a0dd50a1e2ea95412d72d555002b8d1bb516f0ab8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting vulnerabilities in Adobe Reader. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of the LibTIFF vulnerability within XFA. This exploit likely leads to the execution of a second-stage payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Agent-36821'. The embedded URL is likely related to the XFA template but does not appear to be a direct payload delivery URL.

Heuristics 4

  • 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
  • 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/

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