PDF malware analysis — malicious · 925e2e5e0dc49cc0

MALICIOUS

PDF

2.8 KB

MD5: 8ccdb478dc21792829e75979aae1fed0 SHA-1: 4e51d9246a08e166dfc84d9874d77598f8a6f6ee SHA-256: 925e2e5e0dc49cc03e98d6cbb092cffc13da239863aebfdb9f19ff3f5d14a4e4

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript streams are obfuscated, and one heuristic specifically mentions 'Script obfuscation indicators'. The ClamAV detection name 'Pdf.Dropper.Agent-7283266-0' strongly suggests the file's purpose is to drop and execute additional malware. The presence of eval() and String.fromCharCode in the JavaScript points to dynamic code execution, typical for downloading and running further payloads.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7283266-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7283266-0
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111611_000.js` `c9fed23d91fbd6795a7d272a5fb8abc2ceaef08e1069fc20e06931342dc74139`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x197	258 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111612_001.js` `e938713287bf47f23a535386748ff0e6d1fa26b567f527e1e2238a374501ecf6`	pdf-javascript-stream	PDF /JS object 111612 at offset 0x268	3278 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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