Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e56d117e2b229a…

MALICIOUS

PDF

99.5 KB
MD5: 0715b088c5651a14e150eb97968b7a5f SHA-1: 9d81b7e3d6140b9ff13e5b39157f51fa4e0de44f SHA-256: 66e56d117e2b229a0b5d6fd93094c9a14688e42369fd22f8b4f265966c2c5082
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) content, which is known to be a vector for exploiting vulnerabilities in Adobe Reader. The critical heuristic firing for CVE-2010-0188 indicates that the sample leverages this specific vulnerability to achieve code execution. The embedded script payload further suggests that the exploit is used to download and run additional malicious content.

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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
1489f48857e597f9f5e908dc1de1120eaeb9ac8e7ed1c818e0a22eecf6a8b710		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101169 bytes

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