Malicious PDF — malware analysis report

Static analysis result for SHA-256 159fc20ba118c640…

MALICIOUS

PDF

83.3 KB
MD5: ed992e7a0eb94c980c78bcbad0f2d670 SHA-1: cccdff19987fd2bb7cecf3f32f7b6d3baecbf79f SHA-256: 159fc20ba118c640f7fe0e98812b6030324bbe1b978ae7f881ae002419c209f8
108 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF and XFA forms. The embedded JavaScript attempts to reconstruct and execute a payload, likely for further exploitation or malware delivery. The benign URLs present do not detract from the critical heuristic firing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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_pdf_script_000002a7.bin
94c396c5160da9ad44342b4cee511e82148fd25891794c1036ed6e3410679dfd		 pdf-embedded-script PDF raw stream script payload at offset 0x2A7 84507 bytes

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