PDF malware analysis — malicious · 636cb37f83fe754a

MALICIOUS

PDF

16.3 KB

MD5: 2461a71d5333b67ebebf9f3c9c7df207 SHA-1: 368d1e4e3160bd7aeba9d18993287bc1dfb37ede SHA-256: 636cb37f83fe754a1421092f209116f73463726be1ddd3bbec8354eb29c9fd9a

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that is likely intended to exploit the CVE-2010-0188 vulnerability in Adobe Reader. The ML classifier and ClamAV detection strongly indicate malicious intent, with the exploit targeting XFA forms. The embedded script is heavily obfuscated and truncated, preventing a full analysis of its specific actions, but its presence within an exploit context points to a malicious payload execution.

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.
ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_00000359.bin` `55afa4c83379ac85021b33d2d10df5ea7e0d5cc5205cd261b9952b15fb289a67`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15926 bytes

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