Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff1981b7cca1cc7…

MALICIOUS

PDF

24.2 KB
MD5: 4fad2188ff2a83a18defefa86a5d87a9 SHA-1: 27e8714d1609ab82f12c561f0df245fb4abdcf13 SHA-256: 5ff1981b7cca1cc7932bc2fb7a3a07b5e8af046a9cfef75a106f3246654a9190
160 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical detection for CVE-2010-0188, which is an exploit targeting Adobe Reader's LibTIFF component. The presence of XFA form elements and the exploit payload strongly suggest this document is designed to achieve arbitrary code execution upon opening in a vulnerable application. The embedded URL, while seemingly benign, is associated with XFA templates and could be a lure or part of the exploit chain.

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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