Malicious PDF — malware analysis report

Static analysis result for SHA-256 603442a8a55a3eaa…

MALICIOUS

PDF

75.8 KB
MD5: ff9a0fcdcd0fddd4aa35718728b1224a SHA-1: d729986cb7b100e510cef7be6adaa3ff9009e80b SHA-256: 603442a8a55a3eaa57ae91e92903f3ee352c4e72c49342928dbb71709f5f0a8e
168 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical 'CVE_2010_0188' heuristic, indicating an exploit targeting Adobe Reader's LibTIFF component. The embedded XFA script, which is JavaScript, likely contains obfuscated code designed to download and execute a second-stage payload. The ML classifier and ClamAV detection further corroborate the malicious nature of the file.

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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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_00000286.bin
5f22ce9bfb1614f00f09d160376c403c69bfa1ad430e3b5c6f9121853aff8a9b		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76868 bytes

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