PDF malware analysis — malicious · 234fbe273a3ed72f

MALICIOUS

PDF

2.6 KB

MD5: 2812bc5d3e786756ac91ba94f857616c SHA-1: e60d951e7419db343f388d4d47560101e2daa910 SHA-256: 234fbe273a3ed72fee2e160796be1317b739b49e26be97b8e46b0af5839ce93b

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic suggests exploitation of a vulnerability related to media player functionality. The unescape() call further points to obfuscated JavaScript execution. The embedded JavaScript is likely designed to download and execute a secondary payload, as suggested by the ClamAV detection name 'Pdf.Dropper.Agent'.

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.
ClamAV: Pdf.Dropper.Agent-7009068-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7009068-0
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_obj0006_000.js` `620527cf76b2ae863d33c0665566b064c2923451cffd1b7ef19582586d1c4c55`	pdf-javascript-stream	PDF /JS object 6 at offset 0x158	2092 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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