Malicious PDF — malware analysis report

Static analysis result for SHA-256 668673cd32d0630d…

MALICIOUS

PDF

100.0 KB
MD5: 2fffe1b822fcca60e9536449fa977c19 SHA-1: 16c6921cc1a317b9630e5fddff9b9704ac19ce53 SHA-256: 668673cd32d0630d8a7cf25ef49f6d072a52ef0c09b33bd97537d9ec504ffc89
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier and exhibiting critical heuristic firings for CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF component. This exploit is likely used to achieve arbitrary code execution, enabling the download and execution of a secondary payload. No specific family could be identified, but the exploit vector is clear.

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
15828ce3e7db6e549292f50267e2b14df4b739fd19a7dc5ed20cb44f856aa650		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101603 bytes

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