Malicious PDF — malware analysis report

Static analysis result for SHA-256 917cfaddceadf415…

MALICIOUS

PDF

24.2 KB
MD5: fc44c0add4a6118478e34220d535327c SHA-1: c2e476475f6da577470d85e3d669f3579b2ccb59 SHA-256: 917cfaddceadf415b8e5ac6e5a8d12c8c8bb907737c3fec62db6d2d8cb2b5d04
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF file identified as malicious by ClamAV, specifically detecting 'Pdf.Exploit.Agent-36821'. Static analysis indicates the presence of an XFA form and a critical vulnerability (CVE-2010-0188) related to LibTIFF processing within Adobe Reader. This exploit is likely used to download and execute a second-stage payload. The embedded URL, though seemingly benign, is associated with XFA schemas and may be a lure or part of the exploit chain.

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/