Malicious PDF — malware analysis report

Static analysis result for SHA-256 166f7039f6d4c264…

MALICIOUS

PDF

79.0 KB
MD5: e174029fd37421be55806701e8352548 SHA-1: adecf4a0fc6d102c3e57abb812b49c951f033923 SHA-256: 166f7039f6d4c264d9d88c93d2bc55e0524a236190d007c9bad46b5bc9635146
116 Risk Score

Malware Insights

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

The PDF sample contains embedded JavaScript and triggers the CVE-2010-0188 exploit, indicating it is designed to execute malicious code upon opening. The embedded script likely facilitates the download and execution of a secondary payload, although its exact function is obfuscated. The presence of XFA forms and embedded files further supports its malicious nature.

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
3db98e5d3fbf3c0b02a7f11c5825f699cc740621c2d8db5f64edaea471c88b9d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80165 bytes

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