PDF malware analysis — malicious · 5baca59bab4a375c

MALICIOUS

PDF

16.3 KB

MD5: b4b6a650db0868470cdbe82294f27389 SHA-1: 040019a223a6818f1eeff8e8eca52a9a278fe443 SHA-256: 5baca59bab4a375ce61b009dc18ad83c634583212fb78153ba3de456c6a44763

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA forms. The embedded JavaScript attempts to download and execute a second-stage payload, indicated by the heuristic firings and the structure of the script. The script's obfuscated nature and truncated content prevent a full analysis of its exact actions, but the exploit and embedded script strongly suggest malicious intent.

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` `0f6c29a5a71738ba1f7c99fb7613cfa583395eb5f0ed955d2c596a078d995fb1`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15928 bytes

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