Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b25c9b335820b9c…

MALICIOUS

PDF

99.8 KB
MD5: 69162db7033e038c6d87e240e423a4bc SHA-1: a420e9c415820a6ecfbce5f117be9ce0490a3098 SHA-256: 0b25c9b335820b9c1001ff9f9178d7d457bd23aa2931bb8450e7e855b19fe4e6
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA form data and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. This exploit is designed to execute arbitrary code, typically to download and run a malicious second-stage payload. The ML classifier strongly indicates maliciousness, and the embedded script payload further supports this assessment.

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
bb83a942d5ecb65f8a9265c7436330b2c4fada358d92f6da12e70f1570012e55		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101431 bytes

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