Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08f2262991dabb2…

MALICIOUS

PDF

24.2 KB
MD5: b6eb9ba87ef954f63314518c95c0aef1 SHA-1: c358f49683f1a9c462f382f3db6d14afd6df2d8e SHA-256: b08f2262991dabb28ee89048cdeb41d7f8619e72aa9ecc19aecb476a676f1cb0
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.004 Command and Scripting Interpreter: PowerShell

The sample is a PDF file that contains an XFA form, which is known to be a vector for exploits. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of a LibTIFF vulnerability within Adobe Reader's XFA processing. This exploit likely leads to the execution of a second-stage payload, as suggested by the ClamAV detection 'Pdf.Exploit.Agent-36821'. The embedded URL, while seemingly benign, is part of the exploit chain.

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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