Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a3dfca95c382a0…

MALICIOUS

PDF

4.2 KB
MD5: 2f711f6d77432e1b9544ac25e143e5c0 SHA-1: 7290f33488a5f6787ee193c429f281759e1b06c5 SHA-256: 75a3dfca95c382a0fdc43dd15bf1fa07e1ac4784127bc6ce21d27b0c9637b981
116 Risk Score

Malware Insights

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

The PDF sample contains an embedded XFA form that triggers the CVE-2010-0188 exploit. This vulnerability allows for arbitrary code execution, which is often used to download and execute additional malicious content. The ML classifier strongly indicates maliciousness, and the embedded file further supports this assessment.

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/1.0\
    • 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
3a15df4ade2224e8be963009a6293f54811b0855f10dea99d6684af23506462e
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12861 bytes