Malicious PDF — malware analysis report

Static analysis result for SHA-256 042ef423c4e99135…

MALICIOUS

PDF

99.8 KB
MD5: a3413229973a307eb8bd0c835ac3512d SHA-1: 5750e98228bdaec91acb7fdc75c54114a67ea708 SHA-256: 042ef423c4e99135804b1de10590a80e910bf70944214295ab795d656594048f
116 Risk Score

Malware Insights

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

This PDF document exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The exploit targets the LibTIFF component, indicating an attempt to achieve arbitrary code execution. While no specific malicious script content was directly readable, the presence of an embedded file and the critical heuristic firing strongly suggest the document is designed to download and execute a secondary payload. The benign URLs present are likely decoys or standard XFA schema references.

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
07d5174ca192d2080248c23bb1b7e5dd04c10d5e0c175e55b7783356c53bd91c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101471 bytes

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