PDF malware analysis — malicious · 96bc87c51e924b2e

MALICIOUS

PDF

1.4 KB

MD5: f4af2a67c6f1a6be431ee37c21cf36ab SHA-1: 0f9626030014282b69af656208ed7280ed414e49 SHA-256: 96bc87c51e924b2e9b8908742e2dad4a734a6dd853e7e0e04c61bd602bf6a2d4

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution 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, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic suggests exploitation of a media player vulnerability. The ClamAV detection of Pdf.Dropper.Agent-7284597-0 further confirms malicious intent. The embedded JavaScript, likely obfuscated, is expected to download and execute a second-stage payload, a common dropper behavior.

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. (matched in decompressed stream)
ClamAV: Pdf.Dropper.Agent-7284597-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7284597-0
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` `83c7cf45f226cb4027a2add9730bf82f58c30be14599a5db3ca2be72c1795571`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1252 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` `9d95319ca261c21452e598033a38edf7302fce23bd913d1a5d6c744111305e97`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x482	243 bytes

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