Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff6b869430f984b…

MALICIOUS

PDF

79.5 KB
MD5: 83e3b9b5a8a12b72077a879365c1d7c6 SHA-1: 1c3673d22bb7abad912583f10c1da7a9d48eaea6 SHA-256: 7ff6b869430f984b3a1059c5f6906d43ca9480c66fe74a4f9862f5ddfb4d2e7a
168 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) data which is exploited via CVE-2010-0188, a known vulnerability in Adobe Reader. The embedded script, although obfuscated, is identified as JavaScript and likely responsible for executing the exploit. The ML classifier and ClamAV detection strongly indicate malicious intent, pointing towards a client-side exploit for initial execution.

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_00000288.bin
ddb47c27b978e373c18cb3d4e5f961ea87afe93b6604d79af4e3190bfbcf8ef8		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80720 bytes

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