Malicious PDF — malware analysis report

Static analysis result for SHA-256 6930f3f4c96fee21…

MALICIOUS

PDF

99.7 KB
MD5: f6bdb5a6d4d35b935cbffb7377f8efca SHA-1: d85a8eb060d539037b365d0374d19caae0b93ef2 SHA-256: 6930f3f4c96fee2162d3822a4bb88a5a7dfe2cf3e56f63bfb200ab32434fdeff
116 Risk Score

Malware Insights

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

The sample is a PDF file that 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 structure, which is likely responsible for executing the exploit. While the specific malicious script content is truncated, the exploit's nature suggests it aims to download and execute a secondary payload. The embedded URLs are benign and likely related to XFA schema definitions.

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
c7017550dd6ddd6a9782380fabb4480ddadaf76c0650319af73a05eb4ee96692		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101336 bytes

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