Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c4efc542519c55…

MALICIOUS

PDF

24.1 KB
MD5: 4f2e212a0a03d482493306c6b2e29d1a SHA-1: 2e06f3021e243200e87de107a8a71766791063e0 SHA-256: c0c4efc542519c55597e76279abc665890860815be361a729104de29b20e6611
128 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, which is a known vector for exploiting Adobe Reader vulnerabilities. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of LibTIFF within Adobe Reader. The embedded URL, while seemingly benign, is part of the XFA structure and could be used to download further stages. The ClamAV detection 'Pdf.Exploit.Agent-36821' further confirms its malicious nature. The exploit likely leads to the execution of a second-stage payload.

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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