Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f9c1b5fcdb724ed…

MALICIOUS

PDF

79.0 KB
MD5: 8b15b33f1dbd443a464f9ca00bbc0e1c SHA-1: 3eeb62c7a917aff4e20b3e0c389b07cd77dfc0c6 SHA-256: 5f9c1b5fcdb724ede81f87a0e7459bb5ab573f60db5c8ea140ac3cd826e257f2
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA forms and triggers the CVE-2010-0188 exploit, which is known to target Adobe Reader. This exploit allows for arbitrary code execution, likely to download and run a second-stage payload. No specific family could be identified, but the exploit vector is clear.

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
d58c94a7347faad6887b073b2d25b29244fdd5c8328b216749934e964d119aab
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80151 bytes