Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d9bd7094332d314…

MALICIOUS

PDF

31.4 KB
MD5: 879bd0644a8d36a73b50db33cb124079 SHA-1: 2fa38cf71b0937cdb65d3a8fcb013aa7bcf4ef72 SHA-256: 5d9bd7094332d31411cd04b49ee99a566d585562417281878e4513cfced1a113
162 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF document that contains XFA (XML Forms Architecture) content. Heuristics indicate it exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. ClamAV detection of 'Js.Exploit.HTML-30' suggests embedded JavaScript is used to facilitate the exploit, likely to download and execute a second-stage payload. The embedded URL is likely related to the XFA template but could also be a C2 beacon.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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/