Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dee41f4d3cc20e3…

MALICIOUS

PDF

99.8 KB
MD5: ba4fa2c41315ed0e14b9f929babacfa4 SHA-1: 36bbc53f551d553a2371fccc54630879a0c7a81d SHA-256: 5dee41f4d3cc20e3ab27402e67318ec2c2f769ed0438f2a60b6e08110a8f1cde
116 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and triggers the CVE-2010-0188 exploit, indicating it is designed to execute arbitrary code upon opening in a vulnerable Adobe Reader version. The ML classifier strongly flags this PDF as malicious. While no specific family is identified, the exploit mechanism points to a client-side execution attack, likely delivered via spearphishing.

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
6eca7b4096d06fe6f8948bed33065280f5cf7eaacfe8b0b32f7d33d83b47bc59		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101412 bytes

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