PDF malware analysis — malicious · 314092de5da73d53

MALICIOUS

PDF

2.6 KB

MD5: 4628a5460c7d397dfb55a843c4fc2b71 SHA-1: f4e2b427b581e20e5c20aec4f7d55e5cbfb38ae7 SHA-256: 314092de5da73d53356f2a49c93ae26898e1ced8a372d8021d87464dfb2f06df

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains an embedded JavaScript stream that is obfuscated, indicated by the unescape() call. This script is likely designed to download and execute a second-stage payload. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further supports the malicious nature of the file.

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` `994b6ba52c18912f581ee07458fc006ddd61b39798b16cc1bc63c2c9c0505fd2`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1C8	1366 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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