PDF malware analysis — malicious · 2dc8035b81c316d1

MALICIOUS

PDF

3.0 KB Created: 2008-12-17 23:30:58 UTC

MD5: 44e26b083cdd17eceae2196527d707ec SHA-1: 5a3911fd7880f8d7290f6b592fb6a53d1b2cce40 SHA-256: 2dc8035b81c316d165c73dbd25d5d4562aa4f97e8b18412cf6a52eff6a1ff61f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ClamAV detection 'Pdf.Dropper.Agent-7244394-0' strongly suggests this is a dropper. The embedded JavaScript, although obfuscated, likely facilitates the execution of malicious code, consistent with a dropper's function of downloading and executing a second-stage payload. The file's metadata and size are typical for such malicious documents.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7244394-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7244394-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
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_obj0006_000.js` `d18c697f1fec93b691c432b16168763ce21b9c6b53d974c185d8065faf698671`	pdf-javascript-stream	PDF /JS object 6 at offset 0xB5	14938 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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