PDF malware analysis — malicious · 62716229f38ac439

MALICIOUS

PDF

16.3 KB

MD5: 6ffda09eba789a467aa1683b43c49ccb SHA-1: afbc885e169d71f937d090fafb72be33f2700197 SHA-256: 62716229f38ac43986dfa903af507f09b43b6b7b79b72ac4a940c4e6f04d84eb

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded XFA (XML Forms Architecture) data which is known to be vulnerable to exploits. Specifically, the heuristic 'CVE_2010_0188' indicates exploitation of a LibTIFF vulnerability within Adobe Reader. The embedded JavaScript, though truncated, likely contains obfuscated code intended to download and execute a secondary payload, as suggested by the 'embedded_pdf_script_00000359.bin' artifact and the ML classifier's high confidence score. The benign URL listed is likely a red herring or unrelated to the exploit.

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` `b63db8b7020013b68407dd1b6d1cf7798702ac97cba7c60a7b8194e3bdaa2472`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15942 bytes

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