PDF malware analysis — malicious · 227a3f2be7f39789

MALICIOUS

PDF

1.5 KB

MD5: 8e64cc7fa54039a82d0116eefbbe371a SHA-1: 3fb5d061ca782b9768819532da76d7e166d49fe7 SHA-256: 227a3f2be7f397898c8e08ad2a928210d6097718a692776489082f3fba2c10e0

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 exploit targeting the media.newPlayer functionality. This exploit allows for arbitrary JavaScript execution, likely to download and execute a second-stage payload. The ClamAV detection of Pdf.Exploit.Agent-20051 further supports the malicious nature of the file.

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.Exploit.Agent-20051 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-20051
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `80d0531cfcfd5f75493ff3aeefeb43b6a7281077b49972807cd2675ac97439ae`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x197	294 bytes
`javascript_obj111712_001.js` `84f2a221dd423ac53a3926e8e687f8f693cc1373d169b5621dfbba3ae006ff7c`	pdf-javascript-stream	PDF /JS object 111712 at offset 0x2B3	1950 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111713_002.js` `27f3b109bc63c59e2a8399ab722d92c7b35227805ca771c1aa8cfa43e62747e6`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x545	79 bytes

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