PDF malware analysis — malicious · dd26b46167af91fe

MALICIOUS

PDF

1.4 KB

MD5: 0aefd0e39be2a431d1e042107aa20a43 SHA-1: b7de96822d1c8858380b0bc0136231931d76a005 SHA-256: dd26b46167af91fe6a1d15fa5dceb5f9498a1bf3cdefd46811ec3deb877685a2

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic suggests exploitation of a known vulnerability in PDF readers. The PDF_UNESCAPE heuristic points to obfuscated JavaScript, which is likely used to download and execute a secondary payload. The ClamAV detection further confirms its malicious nature. The primary IOC is the CVE identifier itself, as no specific URLs or hashes were extracted.

Heuristics 6

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)
ClamAV: Pdf.Dropper.Agent-7312992-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7312992-0
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `1ccdc9b209e7aa05a757ab4573890fa7a9e09257b58b3f479c0cbd625a99d1e5`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1265 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` `02319ed9a630270c3481f12af4f8bb033934ed134208dfe254d42e04e8540237`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48E	258 bytes

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