PDF malware analysis — malicious · 74b822733d5ac5a8

MALICIOUS

PDF

102.4 KB

MD5: 673084056d8fff96684314aa018aa693 SHA-1: 555ff8128bd62d8a493fad64ce8f0d88b0e8fd7f SHA-256: 74b822733d5ac5a898d10bb14a73c0f25e158ad331b61d8b8a99fbc66f193c0b

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file that contains an embedded XFA form, which is known to be a vector for exploiting vulnerabilities. Heuristics indicate a critical vulnerability (CVE-2010-0188) related to LibTIFF and XFA exploitation. The embedded script, identified as JavaScript, likely contains the exploit code to achieve arbitrary code execution. The ML classifier and ClamAV detection further confirm 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_00000346.bin` `6d1746c8c537c38a1679190536da2412cbce30f309de103537c35b98d723a463`	pdf-embedded-script	PDF raw stream script payload at offset 0x346	104174 bytes

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