Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abd637bc38dbff6…

MALICIOUS

PDF

99.7 KB
MD5: 03bd7cb6a2df2689e258552ab46dd2a3 SHA-1: a7640ac15fd44eb1e8c8e80bfdb6438935c55683 SHA-256: 5abd637bc38dbff6a7232a6c2405fc72f2a4bcafb87406a20c50722b056f190a
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate an embedded script payload within the XFA form, which is likely responsible for executing the exploit. The ML classifier strongly flags this PDF as malicious, supporting the conclusion that it is designed to deliver an exploit.

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
429759a10be18ae4d0ec91c001a38fb17d0f3526cad336ff97f500788e68aba6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101356 bytes

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