Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e908c2ffb43137…

MALICIOUS

PDF

99.7 KB
MD5: 40fe2ffa4d86cb94349516a323570383 SHA-1: 23d3d3f7da503e09d0f758c93b69d0388f3a9568 SHA-256: 74e908c2ffb4313770b44c5eed736d4f65756bb4de43e1be8e99ecc0c37a7bf0
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 vulnerable to CVE-2010-0188. The heuristic firings confirm the presence of an XFA form and an embedded script payload, along with a critical alert for the CVE-2010-0188 exploit. This indicates the file is designed to exploit this vulnerability to achieve code execution, likely for downloading and running a secondary payload. No specific malware family could be identified.

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
a81cc54446cb4807a82cbbd462329733281535b60730f913ca793d4939d28dda		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101379 bytes

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