PDF malware analysis — malicious · cd43d2f445685b21

MALICIOUS

PDF

1.4 KB

MD5: c2d68138dcb2eb42cfa7445990ce1825 SHA-1: a415db2606687ee87bd8fc9806cb61d43045c27f SHA-256: cd43d2f445685b21988cf1d4689bf89fdf3e8aabaa421efd539dc1e5b8d892a3

118 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, which is obfuscated and uses the unescape() function. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, indicating the script likely attempts to exploit this flaw to execute arbitrary code. The script's purpose is to leverage this vulnerability for malicious execution.

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` `e1113fd911b0bd090648ea40e2fc1d53e0e80c9d2a80ef838cb49a7d06102603`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1246 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` `d52557cb6e1043774240f132f2d3816b69c613db0e47a001ef532bc3514d6543`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x481	250 bytes

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