Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a6e4cf7f84c691…

MALICIOUS

PDF

99.7 KB
MD5: 3572e93576dcee377a087b92a5a39250 SHA-1: 927b4a79f0dbc7c883e05a195611379b132025d1 SHA-256: 00a6e4cf7f84c6916194b25b8e48360831bed33f0ef15f3691bfd03fc55bff70
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript T1190 Exploit Public-Facing Application

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The critical heuristic firing indicates that the PDF contains a decoded XFA payload, suggesting it's designed to deliver a malicious exploit. The presence of embedded files and scripts further supports this, indicating the PDF's primary function is to leverage this vulnerability to execute a secondary payload.

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 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
bbea18606287886224765904aa70418e6ea19d060d7942f04db0c110a8cc2c6c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101363 bytes

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