Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dc7171c45b71242…

MALICIOUS

PDF

24.1 KB
MD5: 7752442aa829d3d4a84459d642c7aff1 SHA-1: 2b1c4bb355f0ddb8b29f192ddd1da67c290694da SHA-256: 4dc7171c45b712425079d78ec113d1c90821197641f52bb35ab7da02ea4d0d64
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that utilizes XFA forms and exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing within XFA. This exploit allows for arbitrary code execution. The embedded URL, while not directly malicious in this context, is associated with XFA templates. The document body contains obfuscated JavaScript-like code, likely part of the exploit chain, but its exact function is not fully discernible without further dynamic analysis.

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: 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
  • 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/