Malicious PDF — malware analysis report

Static analysis result for SHA-256 7231ad3b5b738984…

MALICIOUS

PDF

63.2 KB
MD5: 98d65f4b30a4a46a5a1b5138ae26c6f8 SHA-1: e7c2fe3b4ea20db355d6a16f150bd008d4ef2afb SHA-256: 7231ad3b5b7389848c303d8d11611ea45096049339d76bd7f454139b1e6a04ca
156 Risk Score

Malware Insights

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

The PDF sample contains an XFA form which is known to be vulnerable to CVE-2010-0188, a critical vulnerability in Adobe Reader. The embedded script payload within the XFA form is likely responsible for executing the exploit. While the specific second-stage payload is not visible, the exploit's primary purpose is to achieve code execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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
843a1ad78ba420e2c82f6b099b289770bec014242d3acf2462f39f5e2d4c7daa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 63960 bytes

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