PDF malware analysis — malicious · 3ab45378941343ed

MALICIOUS

PDF

76.2 KB

MD5: 0bdace82f17fcab9c65afac7f09854a3 SHA-1: 8d17f61f627cc448f8419c8af5c327b895108d08 SHA-256: 3ab45378941343eda4fd1537fca835279d2fab7c156ff2bebccfac33aa640357

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File 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 file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability, specifically targeting the media.newPlayer API. The critical heuristic indicates that this exploit is used to decode and execute a malicious script. The presence of obfuscated JavaScript streams and a deobfuscated stage suggests the primary function is to download and execute a secondary payload, characteristic of a downloader or initial access exploit.

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. (identified after JavaScript deobfuscation)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `7539bdb8605c6ce5e7b02136343292a3527663446388223d25bd313a94289ea4`	pdf-javascript-stream	PDF /JS object 8 at offset 0x210	2960 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).
`legacy_pdfkit_stage_000.js` `42c3f4df375ff6f58ff655cc4f88b5cc28f0dd33b978390db3538684a6219b74`	deobfuscated-js	string-concatenation normalized Acrobat API aliases at offset 0x210	126 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.