PDF malware analysis — malicious · 1c6c4e26875bc440

MALICIOUS

PDF

16.3 KB

MD5: 16a9209b042dcb60a758dc1b2f479198 SHA-1: 50f9fd76c03d77e4936d0fd8bd52d6b14202a3bd SHA-256: 1c6c4e26875bc4409b6f9fc39d93751ce60db733cdd63a54c2c075eb2cecfdf3

188 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The sample is a PDF file that leverages the XFA (XML Forms Architecture) feature to deliver a malicious payload. Static analysis detected critical heuristics related to CVE-2010-0188, an exploit targeting Adobe Reader's handling of XFA forms. An embedded script within the XFA form is the likely vector for executing the exploit. The script is designed to download and execute a second-stage payload, although the exact mechanism is obfuscated. The presence of the CVE-2010-0188 exploit and the embedded script strongly indicates a malicious intent to compromise the user's system.

Heuristics 6

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.
XFA form contains executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
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.
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://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` `179506655f09b6f5739bfcbe9a51a1374dd82daa9b67abe0f18953557518b9ae`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15926 bytes

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