Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f7b1a8861b13496…

MALICIOUS

PDF

99.8 KB
MD5: 6377cc516282e42b89ace1b4955e556c SHA-1: 602459305ea81e5e2201e806a693fa4f58faeeae SHA-256: 5f7b1a8861b134967aa65ab617c77ba1db2fb56e8acc47b54f98f0253f8a754c
116 Risk Score

Malware Insights

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

The PDF sample contains embedded XFA forms 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 second-stage payload.

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
6b9039acdc0b2367feb7e55a0ccca06fbb86abec0e58b0484d18bd3496dd2ccf
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101421 bytes