Malicious PDF — malware analysis report

Static analysis result for SHA-256 7384b1a26935e738…

MALICIOUS

PDF

99.7 KB
MD5: ff3bc1be21efa2b31c66b7fc59f4178b SHA-1: d213efbbce18dbe96b3ce0ec5ca5a36ee76c3d38 SHA-256: 7384b1a26935e7385e2e70bc6f118da768b9fe1fb003f3eae5a42374ba484dd5
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit allows for arbitrary code execution, which is often used to download and run additional malicious content. The embedded JavaScript, though obfuscated, likely facilitates this secondary stage execution. The benign URLs present are likely part of the XFA form structure and not directly indicative of malicious C2 communication.

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
a714b9d3f242b8b80bf31580c11b8263c2c2558cb04eda54b3921a754a85ceda		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101304 bytes

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