Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa40f9c4e9dbc28…

MALICIOUS

PDF

99.8 KB
MD5: b76c8352494292cda59dde7bbdeb4405 SHA-1: 20954e8f98393a2dadbd54d6d5df04e14e4a29cb SHA-256: 6aa40f9c4e9dbc286c5e84c02e57165a1f1f911716a1d40a336ac2fe8dfffff1
116 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload and triggers the CVE-2010-0188 exploit, indicating it is designed to execute code upon opening in a vulnerable application. The ML classifier strongly suggests malicious intent. While the embedded script is heavily obfuscated, its presence alongside the exploit points towards a downloader or dropper functionality.

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
ab3b34ba3a86d4e2bb8838ff9c87177d0d0cd299b6e876c6fcd47685cdb9c61e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101486 bytes

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