Malicious PDF — malware analysis report

Static analysis result for SHA-256 64044d65993c301f…

MALICIOUS

PDF

90.4 KB
MD5: 9da66b3fb9d2e342d6ff48158038d5a6 SHA-1: 00aa1a4f7502b9ade9de00729d0d6150fc5b5207 SHA-256: 64044d65993c301feba9ebf44b8313c502b90ec736f589ba95461c4eb8bf1fbe
116 Risk Score

Malware Insights

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

The PDF sample contains embedded XFA form data and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. The ML classifier strongly indicates maliciousness. The embedded script payload suggests the PDF is designed to download and execute a secondary stage, though the exact script content is obfuscated and truncated.

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
a0284c9a93422d1a89992a14f4433a8c50769c35d7c13cbab677795f781e8c16
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 91837 bytes