Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1f07ef5d85d0a3e…

MALICIOUS

PDF

14.4 KB
MD5: d9dc3b170d3fbe8753fe2684aa9b1aba SHA-1: 5a191efb378866184b3a26264402e3da70b62074 SHA-256: b1f07ef5d85d0a3e49a6a02d2746e465dcce901f0401e82ba0b2466724763f55
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter T1059.007 JavaScript/TypeScript

The sample is a PDF file that leverages XFA forms to deliver a payload. Heuristics indicate exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to LibTIFF processing within XFA forms. The ClamAV detection 'Js.Exploit.HTML-30' further suggests the presence of malicious JavaScript, likely used to download and execute a second-stage payload. The embedded URL is likely related to the XFA template schema.

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 numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER
    PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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/