PDF malware analysis — malicious · 039ca22ca1d5559c

MALICIOUS

PDF

73.4 KB

MD5: 419ce13f24b384ff771e9e207db9ede5 SHA-1: d353870958cf88b2088407c69cc049823790a374 SHA-256: 039ca22ca1d5559cd11f718af91078840f1a6d0e3166eeb615c095fe59060312

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that is obfuscated and likely intended to download and execute a second-stage payload. Heuristics indicate a critical vulnerability (CVE-2010-0188) related to Adobe Reader's handling of XFA forms and TIFF images, which is consistent with the exploitation of a client execution vulnerability. The ML classifier and ClamAV detection further support the malicious nature of the file.

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_0000034e.bin` `a3274f5907e37c185987254a9c59e122aae3984305ce0d4680b44cbdd3bc9ac1`	pdf-embedded-script	PDF raw stream script payload at offset 0x34E	74422 bytes

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