Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de726420b0e66cc…

MALICIOUS

PDF

99.7 KB
MD5: 715cb62dbeff84e70ea6b9f5af100bc8 SHA-1: 28e01813bfb4360f0072bc02fd94035adaffb1ec SHA-256: 6de726420b0e66ccafac7359c9aa1cbed2c08e7e7f753687567b8430ded1e524
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The heuristic firings indicate an XFA form with an embedded script payload, which is consistent with exploitation. The ML classifier strongly flags this PDF as malicious. The embedded script likely downloads and executes a secondary payload, though its exact contents could not be fully reconstructed.

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
2a25479143bc68562af4c0599721ea272926b0fa3d9eb29e1c8569033d285401		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101356 bytes

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