PDF malware analysis — malicious · c644f91c9a645e39

MALICIOUS

PDF

1.5 KB

MD5: 21e8bf8c00e2aff5916807cdd65db4ed SHA-1: 242d0ba53b3382c9eac38c7763e21763b3b10565 SHA-256: c644f91c9a645e39fadb9bfa08555f29f8210aa826a203bde0212d1107a2f84e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_UNESCAPE heuristics. The ClamAV detection further confirms its malicious nature. The embedded JavaScript file, javascript_obj0006_000.js, is likely responsible for executing the malicious payload. The exact functionality of the script is obscured, but its presence within a PDF and the associated heuristics strongly suggest it's designed to exploit vulnerabilities or deliver further malware.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `a41491c26b076b864a3b207123b6ea9575785e397bba94361e0f43041ff57aee`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1B0	365 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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