Malicious PDF — malware analysis report

Static analysis result for SHA-256 16cddbe777d8aa32…

MALICIOUS

PDF

31.7 KB
MD5: 8c927c1d11e7e9c4c4d3e8dc9c04b6a6 SHA-1: c471e502a7087e74cf3ef28362a679f0cb329903 SHA-256: 16cddbe777d8aa32b553b9bda9d0df0563b24f108da14a7489f5e5dd4efb3891
160 Risk Score

Malware Insights

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

The file is a PDF that leverages the XFA form feature to exploit CVE-2010-0188 in Adobe Reader. The embedded JavaScript, detected by ClamAV as Js.Exploit.HTML-30, is responsible for executing the exploit payload. The primary purpose appears to be the download and execution of additional malicious content, indicated by the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • 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/

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