Malicious PDF — malware analysis report

Static analysis result for SHA-256 145a899a343a6fd7…

MALICIOUS

PDF

99.8 KB
MD5: 67842f020050e0d413fea6246c6ff898 SHA-1: 68859f0d4f91851d7f318777be9747334ff25d17 SHA-256: 145a899a343a6fd7c189ce8d91b069cd74efe218f2db0ad9ee38b9cb101baa3c
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The ML classifier strongly indicates maliciousness. The embedded file and XFA structure are consistent with exploit delivery mechanisms.

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
2dfec8fcd407ebbde90b90c8a5baf171785f9e5bfb43f6f9914593d6c3198a94
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101426 bytes