PDF malware analysis — malicious · 6fdbfa5329a25bff

MALICIOUS

PDF

16.0 KB

MD5: a74785548ef393f7807e6d4c4021f0fa SHA-1: 76676542f0d74cfae691e1a5abe5fc2bf73f3788 SHA-256: 6fdbfa5329a25bffad52fea204b361340d7191576c88f7841a6e9ed2a7fda6df

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file that triggers a critical heuristic for CVE-2010-0188, an Adobe Reader exploit. An embedded script, identified as JavaScript, is present and likely contains the exploit payload. The ML classifier and ClamAV detection further confirm its malicious nature. The script's content is heavily obfuscated and truncated, preventing a detailed analysis of its specific actions, but the exploit itself is the primary indicator of compromise.

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` `30b91c12fd0586b94347411701e55ec2d7de85c64846fcce9d103cf37df6af5c`	pdf-embedded-script	PDF raw stream script payload at offset 0x34E	15701 bytes

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