PDF malware analysis — malicious · 0acb61fe121080eb

MALICIOUS

PDF

12.8 KB

MD5: ff902ded4aae9fe6a9ba1b7f04901e0b SHA-1: 874ef1e5c9d06219856bde1e0b6b61f4682ca9e0 SHA-256: 0acb61fe121080eb4225c2aca2df526bfaa4119d3c7dcb8bf1d4d0793ca12489

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript within an XFA form, a common technique for exploiting PDF vulnerabilities. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded script, though truncated, appears to be designed to download and execute a second-stage payload, as suggested by the structure and function calls.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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` `ca5881df58e665c51af959e598cc73ebf6dd824638d663e9c21ee2df1d553cbd`	pdf-embedded-script	PDF raw stream script payload at offset 0x359	12388 bytes

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