Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2f91f832811ddd…

MALICIOUS

PDF

24.1 KB
MD5: 354959951432324cb0a0f9c43c183ffd SHA-1: 1494abf971a717599bc31dfe2c0fd2a7fb1bb318 SHA-256: 3e2f91f832811ddd11e640c0f35ad059ed87d866c5d012cd5bc43e0418078303
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The sample is a PDF file identified as malicious by ClamAV, specifically detecting Pdf.Exploit.Agent-36821. Critical heuristics indicate the exploitation of CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms and LibTIFF. The embedded URL, while seemingly benign, is likely part of the exploit chain. The document body contains obfuscated JavaScript-like content which is likely related to the exploit 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: 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/