Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dc785e1089a617a…

MALICIOUS

PDF

99.7 KB
MD5: 31136f2a73af6e43d2dd243a454897a0 SHA-1: 9dad385705ca56f4d4f3b03afbfdae5d2d8cf9d0 SHA-256: 6dc785e1089a617add53c0d7088c889b5da20353821a1c5a99445416355635fd
116 Risk Score

Malware Insights

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

The PDF sample contains embedded XFA content and triggers the CVE-2010-0188 exploit, which is known to be used for arbitrary code execution. The embedded script payload and ML classifier further indicate malicious intent. The exploit likely facilitates the download and execution of a secondary payload, although no specific URLs for this purpose were extracted.

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
5c71285d6c49ecbdef613d7665ed944c55f982a516f0c28124374bfbf1918715		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101349 bytes

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