Pdf.Dropper.Agent-7277588-0 PDF malware analysis — malicious · 81ded93b69b6b505

MALICIOUS

PDF

1.4 KB

MD5: a5d21d34eed430eed39be84488ca9918 SHA-1: 07fb960026e5a967cc5ff29ef86c7e4021742627 SHA-256: 81ded93b69b6b5056fe0fa726df31ce799414809f8ad6fc6770d58f077c36173

268 Risk Score

Malware Insights

Pdf.Dropper.Agent-7277588-0 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file contains obfuscated JavaScript that leverages the CVE-2009-4324 vulnerability through the media.newPlayer object. The script is designed to download and execute a second-stage payload, as indicated by the critical heuristic firings for PDF JavaScript exploit clusters and ClamAV detection. The specific exploit target and payload are not fully discernible due to obfuscation, but the intent is clearly malicious execution.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (matched in decompressed stream)
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-7277588-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7277588-0
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `c987abfbc0fffccb45890f3b42388299f4cb8683afab3b5821a0cf2ec02e8306`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1295 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `d817ac0a726dd0a0d529d21d1c6220217055bf2a7519a2ec21fe02fbfef6ddc7`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48E	268 bytes
`combined_document_js_000.js` `8005503316d462483ab669c8f18db7511fd8fba14bee1a91b0278f2765573101`	deobfuscated-js	combined document JavaScript streams at offset 0x160	1564 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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