Malicious PDF — malware analysis report

Static analysis result for SHA-256 640a70fe2f045f8c…

MALICIOUS

PDF

24.1 KB
MD5: 785c9eabdd60feb795250455fbe7a899 SHA-1: 02c091751eba798e00248050846905de733be93b SHA-256: 640a70fe2f045f8c1d7aabc070c4829a4b875652369ae289f652ffbfc306a6f7
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 engines, including ClamAV and a machine learning classifier. It contains an XFA form and exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. This exploit is known to be used for arbitrary code execution, typically to download and run additional malware. The embedded URL, while seemingly benign, is present within the exploit context.

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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