PDF malware analysis — malicious · 7026ac8ef5acc5cf

MALICIOUS

PDF

12.8 KB

MD5: 7c4f8c4e815c1186445c7d7425101635 SHA-1: 77fd6eb679275a83015e1c11032a8b6db2845de5 SHA-256: 7026ac8ef5acc5cf5600167f6e6fe8399411bfbf5458ed8b24a3f4f062cae481

168 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample is a PDF file identified as malicious by multiple heuristics, including a critical alert for CVE-2010-0188, which is an Adobe Reader exploit targeting XFA forms. The embedded script, although heavily obfuscated and truncated, contains JavaScript code that likely attempts to download and execute a second-stage payload. The ML classifier and ClamAV detection further corroborate the malicious nature of this 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_00000359.bin` `8204cd2290811ae232437207edbca779248e3ba949a99a056f7e3b461514c524`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12327 bytes

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