PDF malware analysis — malicious · e33c44588f05c164

MALICIOUS

PDF

3.7 KB

MD5: 31afff50bb818304b6ece6674e792083 SHA-1: 0991b16402d513a177fa1429fed6376459fd8903 SHA-256: e33c44588f05c164c466ddfbd3350fb845d3ddedd533fad82cfe9c9ccd00ac3d

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_UNESCAPE suggests obfuscated JavaScript code. Crucially, the CVE_2009_4324 heuristic firing on media.newPlayer points to exploitation of a known vulnerability in PDF readers. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, which is a common technique for initial access.

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.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `cdc4f290fa1e43a150ee8086a54f16573c063be46fda9cd124cec330b09e60c1`	pdf-javascript-stream	PDF /JS object 8 at offset 0x217	533 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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