Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb86c7766cf8435…

MALICIOUS

PDF

24.1 KB
MD5: dc752503dc42fc512cf66d9d5649d291 SHA-1: 5e3b5852dc7037e4f240d21756a475192d77343c SHA-256: abb86c7766cf8435ebd8ebd2400f4f2ed3cbd73f3ea718bcf7db6ed6dcc66457
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF document that contains an XFA form, which is a known vector for exploiting vulnerabilities. Static analysis identified a critical heuristic match for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This indicates the document is designed to exploit this specific vulnerability upon opening in a vulnerable version of Adobe Reader, likely to download and execute a second-stage payload. The embedded URL, while seemingly benign, is present within the document structure.

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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