Pdf.Dropper.Agent-7222593-0 PDF malware analysis — malicious · 024e62fccd2028c4

MALICIOUS

PDF

9.1 KB Created: 2009-09-24 22:28:20 Authoring application: uFIGUrnfLVdlNHp (via hnbuAptVjpaVuLCj)

MD5: 0179778f1c5286317ae14f214a0de608 SHA-1: 46a3ce0431da644bf0deefb65ef74b9c883e5b14 SHA-256: 024e62fccd2028c446fa8f8aa5102ca1d1bfbdfd9f9c662c25b4677f258b7dbd

216 Risk Score

Malware Insights

Pdf.Dropper.Agent-7222593-0 · confidence 95%

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript that utilizes an eval() call to execute obfuscated code. This script is designed to download and execute a second-stage payload, as indicated by the PDF_JS_EXPLOIT_CLUSTER and ML_NYX_PDF_MALICIOUS heuristics. The ClamAV detection name further supports its classification as a dropper.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Dropper.Agent-7222593-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7222593-0
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.
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_obj0007_000.js` `5fb4c974ec0fba942fd7f1503728a051d3b5740987332f12c0c6427c89c1e435`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4AC	5931 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `85d318f90a1a8fc51913462a999390d1d767f23b30bbb95626ae3dfd10d648ce`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4AC	2003 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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