Malicious PDF — malware analysis report

Static analysis result for SHA-256 131d93819dadb246…

MALICIOUS

PDF

99.7 KB
MD5: 64820723352f93c72e8ed5915dbdb194 SHA-1: 163a187cf7017e7cf4628ffc3ff326c35e85fa82 SHA-256: 131d93819dadb246a5e3746b93f0e288d1c7547f4dd75bacfdaeb5c2fd1e5c10
116 Risk Score

Malware Insights

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

This PDF file is flagged as malicious by an ML classifier and contains heuristics indicating it exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The embedded script payload suggests an attempt to download and execute a secondary stage. While the script content is obfuscated, its presence and the exploit indicate a clear intent to compromise the user's system.

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
93446574cff79ef9249d343780e5412b869c29e8bc91d869032b988a36f3de5d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101342 bytes

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