Malicious PDF — malware analysis report

Static analysis result for SHA-256 016cb11aa120c7cb…

MALICIOUS

PDF

99.7 KB
MD5: 00149de8bd572cec793bd4db134de794 SHA-1: cb979e795c373ad8ca773ba1fe821f5d873d4e73 SHA-256: 016cb11aa120c7cb094282dea4c48047033d5cb6d0944cd57c0895376b078752
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript T1190 Exploit Public-Facing Application

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit likely leads to the execution of a malicious payload, as indicated by the embedded script payload heuristic. The ML classifier strongly flags this PDF as malicious, suggesting a high likelihood of a second-stage download or execution.

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 script payload in PDF stream medium 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 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 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
063bb79500d4c9bb0e55099b0f481082468d343168ce9ab16123f2fba3f798af		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101295 bytes

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