PDF malware analysis — malicious · 389be76df9599875

MALICIOUS

PDF

2.9 KB

MD5: 5dbbfb7cc4ab8a8255511e9e24bd5138 SHA-1: 74f03105b9ab8a699d176b86cd97c0651f643cfd SHA-256: 389be76df95998754ee6c3898a4b7b97ef0cd9f39c998d749f6ea394cd8479f1

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Dropper.Agent-7249921-0' strongly suggests this is a dropper. The embedded JavaScript, though obfuscated, likely facilitates the download and execution of a secondary payload, a common technique for droppers. The file's structure and heuristic firings point to a malicious dropper designed to deliver further malware.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7249921-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7249921-0
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_obj0009_000.js` `9f2ed4f2a7b6276cc16bd2d295bfc3bc70c35e1bffb3f6da2caf21732ab3c3c1`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	20177 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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