Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd71f0eb7b8fd8fa…

MALICIOUS

PDF

24.4 KB
MD5: 77bb6b8a7c3541f4e8c39f37dceea5b1 SHA-1: b76039d0c810d15604874cc48efdb7b04c5515a3 SHA-256: fd71f0eb7b8fd8fab326cf8def6ece7c7ec5f67e609712796febf7e0f5e6fe1d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that triggers the CVE-2010-0188 exploit, which targets Adobe Reader's XFA functionality. ClamAV also identified it as Js.Exploit.HTML-30, indicating embedded JavaScript used for exploitation. The embedded URL, while seemingly benign, is part of the exploit structure. The XFA payload likely downloads and executes a second-stage payload.

Heuristics 5

  • 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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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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