Malicious PDF — malware analysis report

Static analysis result for SHA-256 16704f2cfb30fb45…

MALICIOUS

PDF

99.8 KB
MD5: 8d6b36d523f41a1a604f309585d4e0f3 SHA-1: 61e07b64ca062ca4a2bffe10f398b2d6e06c17aa SHA-256: 16704f2cfb30fb454cc6540b44ccd561db4549dd7b0c63970c78462c714a20ff
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF document is flagged as malicious by an ML classifier and contains heuristics indicating the exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The presence of an embedded script payload further suggests that the exploit is used to download and execute additional malicious content.

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
d0dd7c2d7a9bea620771934953a7b8796c9ada29126196de526c779bd76ea2f2
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101447 bytes