Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0b2f392f3d8fa0…

MALICIOUS

PDF

79.0 KB
MD5: f0a2c9b7e29aa2b5a764fc4fd106baba SHA-1: 84091b281ba5f8a42115199c6c5ed9a3b10e9676 SHA-256: 5b0b2f392f3d8fa038ee40f7a7c76925100c15cd2a93835114bb8bfdcc236cf6
116 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2010-0188 indicates exploitation of a known Adobe Reader vulnerability. The PDF also contains embedded script payloads and an embedded file, suggesting it is designed to deliver and execute further malicious content. The ML classifier strongly supports a malicious verdict.

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
c61a83efcce35b12c140103ab822f9bea5ddd43a7f850cda1fbc5e5e423ddc7b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80170 bytes