Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ad783bff5c2abd…

MALICIOUS

PDF

78.5 KB
MD5: 23a9cdc8f0061e545ee65a8a5cd38672 SHA-1: 2e3d3de9501996d04f9665b7a2374c8ba4f83996 SHA-256: 11ad783bff5c2abd324bc8bd2aef746a9e65d88db99554f57476a0db70f5643f
116 Risk Score

Malware Insights

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

The PDF file contains an embedded script and triggers a critical heuristic for CVE-2010-0188, an Adobe Reader exploit targeting XFA forms. This indicates the file is designed to exploit this vulnerability for client-side execution. The embedded script, though obfuscated, likely facilitates the download and execution of a secondary payload, a common technique for malware delivery.

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
183b610680d5c270e988c4583c5376d67de6c74e298f090b7674533c9925c7fa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79659 bytes

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