Malicious PDF — malware analysis report

Static analysis result for SHA-256 6128953e777d78dd…

MALICIOUS

PDF

99.6 KB
MD5: f6443d86b4a4e03db1bd87e3b93e16ae SHA-1: b507dca71a8da6bde946774d5ca06f6bcc7e5993 SHA-256: 6128953e777d78dd57d9ecc38d8e33fd78d0c900e831ec6ba3ad1b2c9e05bbc3
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, indicating it's designed to execute code upon opening in a vulnerable Adobe Reader version. The embedded script payload suggests it's intended to download and run a secondary stage. While the embedded URLs are benign, the exploit and script payload are strong indicators of malicious intent.

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
4404c823053383d8f206c0c690b921f45067ff8b87486811efef548a0e414aa6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101233 bytes

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