Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a11d7087e710d5…

MALICIOUS

PDF

79.0 KB
MD5: 816521a3124a15336ae1d1cb5b7ab509 SHA-1: b8c46a98a39df6b6564455b2f3b502c71bec5ae9 SHA-256: 72a11d7087e710d50539619d3772e105d9bc7490c09f90465520b9c0c9a6aa3c
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms. The exploit targets a known vulnerability in the LibTIFF component, which is often leveraged to gain initial code execution. The embedded script payload and ML classifier strongly indicate malicious intent, likely to download and execute a further stage.

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
7619658e28e9de865bb96cf951029ae9f868d89c55fa141983a015217dd170d7
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80105 bytes