Malicious PDF — malware analysis report

Static analysis result for SHA-256 014e61b881b46794…

MALICIOUS

PDF

99.7 KB
MD5: 07b5fc7031796c530c810de7f98bc5f3 SHA-1: 73e44f4c9e97dee3c3a75d56b53751688ae8b33a SHA-256: 014e61b881b46794000fa780fdaa3ed22662fb64e5b166e823d85ab5e49be25d
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1059.007 Command and Scripting Interpreter: JavaScript

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit is designed to execute arbitrary code, indicating an attempt to download and run a secondary payload. The presence of embedded script markers and an embedded file further supports this malicious intent. The embedded URLs are related to XFA but do not appear to be directly malicious.

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
affe462e184e1d24ed9950ac1f655f732f2a8d5bf94f5751c142efd5d72166f4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101372 bytes

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