Malicious PDF — malware analysis report

Static analysis result for SHA-256 05200e4961b4ebfb…

MALICIOUS

PDF

99.9 KB
MD5: 6de5d1ccc92b12df155b27f2fedea59e SHA-1: 1952ca95d691187fa6be986706f1e0d762db4bc1 SHA-256: 05200e4961b4ebfb986af1951f2c2cf9c1f739928ec99c475ffca09cac22eaa3
116 Risk Score

Malware Insights

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

The PDF file contains embedded XFA (XML Forms Architecture) content, which is known to be a vector for exploiting vulnerabilities like CVE-2010-0188 in Adobe Reader. The critical heuristic firing for this CVE, along with the presence of an embedded script payload, strongly indicates exploitation for client execution. While the embedded URLs are benign, the core functionality relies on the exploit to likely 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
e06293f17658610f4dbc5c2d65de0e45a82c4f8478bb8190acf930f0b5c2cd29		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101538 bytes

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