Malicious PDF — malware analysis report

Static analysis result for SHA-256 717a92c8b7597e89…

MALICIOUS

PDF

99.8 KB
MD5: 684a40806aa3dd0b490e8e462a8278c5 SHA-1: 2f57769bc2aac3c75a429e221fb830ffe8828fcb SHA-256: 717a92c8b7597e8954cef0fd8b0f37454d7605844d6cbceaa339e68083c252d0
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The embedded script payload and ML classifier strongly indicate malicious intent. While the exact nature of the secondary payload is not discernible from the provided evidence, the exploit mechanism points towards a downloader or dropper.

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
27d127a79b345dc97feca5a75dcea31b8b3415dd5f1d14c2dc832066a7fa1cec		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101468 bytes

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