PDF malware analysis — malicious · 0fbfd5c3b27ad1f1

MALICIOUS

PDF

16.3 KB

MD5: a7b5c6eaa34b94f1501a6fc595b8f9c9 SHA-1: 5a27ff2f4dc70e90c44c3264ead41791b70ebe7f SHA-256: 0fbfd5c3b27ad1f16c3c074a4ad54a3386a3fed385af53c4a6838f81dae3cf80

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file is identified as malicious due to the critical heuristic firing for CVE-2010-0188, indicating an exploit targeting Adobe Reader's LibTIFF component. An embedded JavaScript script was found within the XFA form, which is likely responsible for executing the exploit. The script's content is heavily obfuscated and truncated, but its presence and the exploit firing strongly suggest it's designed to download and execute a second-stage payload.

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` `d66e31f417a660ade2b11c96c362bcd5f31601170349e99b98be8b4bf4e20b78`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	15912 bytes

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