PDF / .TXT malware analysis — malicious · a2218154c74783a6

MALICIOUS

PDF / .TXT

2.5 KB

MD5: 272a74648390ef8a7908a0776bc8df28 SHA-1: ff4a8ae0649c4adceff83085f8a2c7cf4436b5e4 SHA-256: a2218154c74783a6146dfbefb3aeca0237d6882145983baa471a6990ab52586e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Script T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic firing suggests exploitation of a known vulnerability in PDF readers. The embedded JavaScript, named javascript_obj0005_000.js, likely contains obfuscated code designed to download and execute a secondary payload. The unescape() call further supports the presence of obfuscation.

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.
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_obj0005_000.js` `384973cb76bdbcca36da845eb04890abb99ae5e988203f4ed60ee9422d2cb56f`	pdf-javascript-stream	PDF /JS object 5 at offset 0x10A	2058 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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