Malicious PDF — malware analysis report

Static analysis result for SHA-256 6135a7f9c95736d9…

MALICIOUS

PDF

24.1 KB
MD5: e2543565934dc02c1a1e8c6168045fa6 SHA-1: 683cd3e6322cf4c207f0e1e9b2daee703e1b0212 SHA-256: 6135a7f9c95736d9667fd130630079db7fb45fdb9809da4caf77b5391c394254
162 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including ClamAV and an ML classifier. It specifically triggers the CVE-2010-0188 exploit related to Adobe Reader's LibTIFF component within XFA forms. The embedded URL, while seemingly benign, is associated with XFA templates and could be a lure or part of the exploit chain. The obfuscated document body content further suggests malicious intent, likely to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/