Malicious PDF — malware analysis report

Static analysis result for SHA-256 63dc7fafc5460a99…

MALICIOUS

PDF

99.7 KB
MD5: 8424d2fb8134cc2e902bbe337ea477d5 SHA-1: d8808a051992aacb88a6ba2e4831ccbc3b2b2642 SHA-256: 63dc7fafc5460a990f3170948a6d2f68b728794e147d928b59976e54da84ece3
116 Risk Score

Malware Insights

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

This PDF file is flagged as malicious by an ML classifier and contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms. The embedded script payload suggests the PDF is designed to download and execute a secondary stage. While the script itself is obfuscated, the exploit and embedded script point towards a malicious document designed for initial compromise.

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
b45ba07d3061d068a72cfdc2babc7d084257619587ff7af4da6f5f398ee194a6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101347 bytes

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