PDF malware analysis — malicious · c576fb81f16f5283

MALICIOUS

PDF

3.0 KB

MD5: 4ec72d5d98c38b812ed654553a97ec95 SHA-1: e6d2727825ee8403538abdf8a97913af596ff08f SHA-256: c576fb81f16f5283dec0997a9f88f975c4e5919f4c1a908201ed41f6a15be613

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Dropper.Agent-7301152-0' strongly suggests a dropper functionality. The embedded JavaScript file 'javascript_obj0009_000.js' is likely responsible for downloading and executing a secondary payload, a common technique for this type of malware. The use of String.fromCharCode in the JavaScript further supports obfuscation and dynamic code execution.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7301152-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7301152-0
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` `fa6d40999baf43ee3216baa6f88bf14a29a6fc74794cdc827a3dbe46bbd8fb1b`	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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