Malicious PDF — malware analysis report

Static analysis result for SHA-256 5511a5c58e9ad11d…

MALICIOUS

PDF

24.1 KB
MD5: 1868a666ac9b06b5e073fcb33ce64a33 SHA-1: a4d59a675c4cb67ab1040f2f537c7a464807733b SHA-256: 5511a5c58e9ad11d8b7192e7f052c030433e1e4560a4fb4af9f1badef643ff0c
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 critical heuristic firing indicates exploitation of CVE-2010-0188, a vulnerability related to LibTIFF processing within XFA forms. This exploit likely leads to the execution of a second-stage payload. The embedded URL, while seemingly benign, is part of the XFA structure and could potentially be used in conjunction with the exploit.

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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