PDF malware analysis — malicious · 28cececb08c5b373

MALICIOUS

PDF

2.7 KB Created: 6665-01-01 Authoring application: 9526

MD5: 226472046bbbd8664d277f9dd29bcb13 SHA-1: 3b7ec912a9a81aa7fb99191f50bd1e3642c0d8d7 SHA-256: 28cececb08c5b3739dec71b4d706f9902c34858f5490927f720ffb60ffbfd810

96 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic flags suspicious artifacts and obfuscation within the extracted JavaScript file 'javascript_obj0013_001.js'. ClamAV also detected this as 'Pdf.Exploit.Agent-36014'. The embedded JavaScript is likely responsible for executing a malicious payload, although its exact function cannot be determined due to obfuscation.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `fe536e7891fb855ec25b51f2e248832b700304f8db2d027d98d0f4cbb5d46ceb`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4808 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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