PDF malware analysis — malicious · d27e5aa2e87ae78e

MALICIOUS

PDF

1.4 KB

MD5: ccf6ba7cbe422916918f7f54f37246ba SHA-1: 4a89facf9e51708343dc4f9bbb3aca11a3cc153c SHA-256: d27e5aa2e87ae78e9d5f5eff807f4c613d90eadb410b750c8c4ba17e5259d67a

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

This 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 unescape() call and the presence of JavaScript streams point to obfuscated code execution. ClamAV detection as Pdf.Dropper.Agent-7307572-0 further confirms malicious intent, likely to download and execute a secondary payload.

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-7307572-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7307572-0
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` `0a761f8b237e1787c15fc3374cfcd8e5758746535ca3b87ff35f104d18cc7f09`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1250 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` `f56de19eac48f6804e2d6c195bc43827647423a3966de94e364695707473e38e`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x486	253 bytes

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