Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2b1b3812b6bafb…

MALICIOUS

PDF

99.7 KB
MD5: a2f4aa125dd7af34178256b5c785ac61 SHA-1: 5e273a194060f6908960bc5c4da9d47f03e70250 SHA-256: 5a2b1b3812b6bafb722d9cef7d4f36dd08fe6b2e5252fa3d52f1c9a87966e0fd
116 Risk Score

Malware Insights

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

This PDF document contains an embedded XFA form that exploits the CVE-2010-0188 vulnerability in Adobe Reader. The exploit targets a flaw in the LibTIFF component, allowing for arbitrary code execution. The embedded script payload suggests the intent is to download and execute a secondary stage. The ML classifier strongly indicates maliciousness.

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
91350cb7f047c60566193ee6ab053f7f119779d6a541162e06282f4403a48599		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101388 bytes

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