PDF malware analysis — malicious · 1e5f87ad8f76023e

MALICIOUS

PDF

3.0 KB

MD5: 7b4f9ba547a72a8b8f74cc974fcf757b SHA-1: cbd3004ccda5110adfcef202ed1107d6b1036afa SHA-256: 1e5f87ad8f76023e37c9f305b348ddeccafe87f3c8f289f6b600bd44b08e763b

86 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 and PDF_JS. The embedded JavaScript stream, named 'javascript_obj0009_000.js', is likely responsible for downloading and executing a secondary payload. ClamAV detection as 'Pdf.Dropper.Agent-7236859-0' further supports its malicious nature as a dropper. The obfuscated nature of the JavaScript and the lack of specific indicators in the document body prevent a more precise family attribution.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7236859-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7236859-0
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` `73c5ecabab521c9bd377f342226ed0515668174eff41f3de1c166bd9139f0a25`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	21201 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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