Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e5dad0b5e81bd0…

MALICIOUS

PDF

99.8 KB
MD5: 183882ca6a7efba7966ddcb552626c39 SHA-1: d958dc3fb05642a9361d6bfa67f51236a5404c4f SHA-256: 03e5dad0b5e81bd02e76791eaafbbb170c9bab33e3d5f4b8cb30165a34a0aa0f
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 like CVE-2010-0188 in Adobe Reader. The critical heuristic firing for this CVE, along with the ML classifier, strongly indicates malicious intent. While the DOC BODY and SCRIPTS sections were truncated, the presence of an embedded file and the XFA exploit suggest the primary goal is to achieve code execution, likely to download and run a further stage.

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
47520bd374efe1eb3ffb44c27c7bf0c0bc5d2548469ef228f2a9420dc1cb147f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101473 bytes

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