PDF malware analysis — malicious · 3d455307e19c5d9e

MALICIOUS

PDF

2.5 KB

MD5: a93679226f16db0f3e17e455bc63e274 SHA-1: 3c2f39484e8cde3f2520f87652af3d91a38b8865 SHA-256: 3d455307e19c5d9e5eb750a3e7f504fc2ea3b10b7cc0e988c23a52ab58f6227a

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious JavaScript T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript/TypeScript

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL firing suggests the JavaScript is obfuscated and likely uses eval() to execute malicious code. The critical CVE_2009_4324 heuristic confirms exploitation of a known PDF vulnerability via the media.newPlayer object. The embedded JavaScript streams, particularly javascript_obj0005_000.js, are suspicious due to their size and obfuscation indicators, pointing towards a downloader or exploit execution mechanism. No specific IOCs like URLs or hashes were extracted, limiting further analysis.

Heuristics 5

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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0005_000.js` `6a82b21adb475b9e94c7cdfe7dcb0783953877b243e05b105fd0bda594883d98`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	2043 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0005_001.js` `a4a39a95112adeb7becbe348ae769bf8a4316eb18c0ca19b042a5144275ca0a0`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	42 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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