PDF malware analysis — malicious · a47779e6a9ce4440

MALICIOUS

PDF

4.0 KB

MD5: 6ed540ce16441e83db14eec48c176f8a SHA-1: 95bb02d6dfb9f6c25e0df625b6db008cd71de45c SHA-256: a47779e6a9ce444010881baa0ffe5154b248ff9c472dcc6c84a1ff1a1e04ae01

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, including calls to eval() and String.fromCharCode(), indicating obfuscated code execution. ClamAV identified this as Pdf.Dropper.Agent-7289461-0. The JavaScript streams likely download and execute a second-stage payload, which is a common dropper behavior.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7289461-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7289461-0
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_obj0013_001.js` `4b24638d61dd2ac73274166ccad42413f03ab28835879e5d6fb72670e71a234d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6325 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `61b771b24ce959450516a7ea5842f97e29d347fce96ad9f440d6054b0f5fdc80`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3589 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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