Malicious PDF — malware analysis report

Static analysis result for SHA-256 665f0dd6c18b031e…

MALICIOUS

PDF

99.5 KB
MD5: 9a7bd8382dc836ae86c722307c7ad155 SHA-1: a989a69bc6facaf5ea277403d888a9da04d3caf6 SHA-256: 665f0dd6c18b031e593950c0efc2e4f338ad89c2a1c3d8e2632afc1f2edf4e6c
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader, which is a critical finding. The exploit targets XFA forms and is designed to execute arbitrary code. While no specific document body content or scripts were extracted, the presence of an embedded file and the critical heuristic strongly suggest this PDF is a malicious dropper intended to download and execute a secondary 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
2e3747d00a0dc625fe855f8a095cc7b772ed2b9ed9e4271851405a20567b3405		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101184 bytes

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