PDF malware analysis — malicious · 5d7166e501f04023

MALICIOUS

PDF

16.3 KB

MD5: bea54507a7ac584e9f811d255ad41dac SHA-1: 54f43a59ece0c2cc34a923fdd941e5fabe227934 SHA-256: 5d7166e501f04023b55f485082e7540d62d3d299a412445cb5f4dad978ee4fc3

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded XFA content that triggers the CVE-2010-0188 exploit, targeting Adobe Reader. 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 array-based string construction make precise reconstruction of the payload URL difficult, but the exploit itself is the primary indicator of 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` `5414cbb85b6c0950b31f521499e88c12659b8da7da73df24afa4812acaf0aef5`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15942 bytes

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