Malicious PDF — malware analysis report

Static analysis result for SHA-256 00839bba926e3555…

MALICIOUS

PDF

79.0 KB
MD5: 0d85745869e5a7de5cc9e7d9794c67b4 SHA-1: fdb53c50d3f908c85393b2b9bc3c07261acf193f SHA-256: 00839bba926e3555c12e7484df3cd59f4050681f68073e0d9116bee9f230c5d9
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter T1190 Exploit Public-Facing Application T1071 Application Layer Protocol

This PDF file contains an embedded script payload and is flagged by heuristics as exploiting CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The ML classifier strongly indicates maliciousness. The embedded script likely downloads and executes a secondary payload, making this a downloader or initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • Embedded script payload in PDF stream medium 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 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 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
c387a0189ac6fe63aec0f4452f90468964e206764d9fc321f9848246fdf1ec55		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80126 bytes

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