Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a1cb9788686fc22…

MALICIOUS

PDF

99.9 KB
MD5: 20d1203a7e2c554d61c58c01e2c05165 SHA-1: 9e4428b05cb0c2972959461e90dc92856d79ae62 SHA-256: 0a1cb9788686fc221d89be768d9598f28890d90657db4c11aff295c3a6b8d8a8
116 Risk Score

Malware Insights

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

This PDF file is flagged as malicious due to the presence of an exploit targeting CVE-2010-0188 in Adobe Reader's XFA forms. The embedded script, though obfuscated, likely facilitates the execution of a second-stage payload. The ML classifier strongly supports the malicious verdict.

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
85675e4fdc926089780dc7148d8bf524e90b224d0a8e16180c6d165670e418b9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101511 bytes