Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b90fe55db5c4540…

MALICIOUS

PDF

24.1 KB
MD5: 79579eee910a089027ba1ff7f2c6af21 SHA-1: e3757ad87854a74e395160464afafe9eef13125f SHA-256: 7b90fe55db5c4540db8235d9be19d3c7e2d1e7110e54abf3832c9b557bf40364
162 Risk Score

Malware Insights

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

The file is a PDF document that contains an XFA form, which is known to be a vector for exploiting vulnerabilities. Static analysis identified a critical heuristic match for CVE-2010-0188, indicating exploitation of a LibTIFF vulnerability within Adobe Reader's XFA processing. The ML classifier also strongly flagged the PDF as malicious. The embedded URL is likely related to the XFA template, but its direct maliciousness is unconfirmed.

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/