Malicious PDF — malware analysis report

Static analysis result for SHA-256 33fa4cb6ec46ba59…

MALICIOUS

PDF

24.1 KB
MD5: 118fcfbf5c7e7c0e95c934f69b120b50 SHA-1: 8696ae04df092978eef23022f41091ca1a677fa5 SHA-256: 33fa4cb6ec46ba59f7a992ed27e6f0ef01167033d994c9b29f69dac33c311ab6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is identified as malicious due to critical heuristic firings indicating the exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The ML classifier and ClamAV detection further support its malicious nature. The embedded URL, while benign in reputation, is part of the XFA template structure, suggesting the exploit likely leverages this to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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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