Malicious PDF — malware analysis report

Static analysis result for SHA-256 128a0c52adf1b9f2…

MALICIOUS

PDF

93.3 KB
MD5: 3b16afe88533d33be419d8a8981d5836 SHA-1: 696c4df5f3446966d73b7b5d122ff1ce8bf58014 SHA-256: 128a0c52adf1b9f23e2ee05a930e2b3dc02836d1fb3a31e0acbaab7d2ce08978
160 Risk Score

Malware Insights

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

The critical heuristic firings for CVE_2010_0188 and PDF_XFA indicate that this PDF document is designed to exploit a known vulnerability in Adobe Reader. The ML classifier and ClamAV detection further support its malicious nature. The embedded URL, while seemingly benign, is present within the context of an exploit, suggesting it may be related to the dropped 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.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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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