Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3dce038f6588e07…

MALICIOUS

PDF

12.0 KB
MD5: 36bfb103235952a9707b82c290dca9fa SHA-1: 94bc72f4efda1c3c501cd4dcf5fa497fdbbabeec SHA-256: e3dce038f6588e078f8eba79f3312f16b79919be8b57467ba5e81d203c467ac8
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: JavaScript

The PDF exploits CVE-2010-0188 via an XFA form, triggering a JavaScript stager. This stager is responsible for downloading and executing a second-stage payload. The ML classifier strongly indicates maliciousness, and the presence of an embedded script payload further supports this. The extracted URLs are related to Adobe XFA, but their reputation is unknown or benign, so they are not considered primary IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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 numeric JavaScript stager high PDF_XFA_NUMERIC_JS_STAGER
    PDF XFA script reconstructs a hidden JavaScript stage from numeric field data or a character table, then evals the result. The decoder is gated on XFA script, numeric staging, and recovered exploit-like JavaScript or shellcode markers.
  • Embedded script payload in PDF stream medium 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 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
24dfbd49a96231ab7a6d845e9972064aa4b3db6b3d595c48fbefb86e4ff86ab2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 11611 bytes
xfa_numeric_stage_000.js
07922fb5525bd303c31afca86cefcbf2f291ee4097d7bd6ae571e3eb8adc1071		 deobfuscated-js XFA caret-number decoded JavaScript (raw) at offset 0x4C0 3422 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.