PDF malware analysis — malicious · 82f3684e38d7623e

MALICIOUS

PDF

1.4 KB

MD5: d19c3193936b7a2b6c228c367fb1afb2 SHA-1: ca23122cac26cf8fe0b468c969c3afee159e5c81 SHA-256: 82f3684e38d7623e6ce3c2b469f09e5b8e6784934e21bb911077e4a6e9ea0911

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains embedded JavaScript, which is triggered by a media.newPlayer action, indicating exploitation of CVE-2009-4324. The JavaScript is obfuscated and uses unescape() calls, suggesting it's designed to download and execute a second-stage payload. The heuristics indicate a suspicious extracted artifact with script obfuscation indicators.

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. (matched in decompressed stream)
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` `680639c26eadb1016bc7e9204cf44d6fca0dfcced30b9fcb220ed7af3f576c6d`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1232 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` `126f53250fb42594b382d1065da6905118fcf9cf645d3183e83f03e091aac061`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x47C	246 bytes

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