PDF malware analysis — malicious · ca5789ab19f3db31

MALICIOUS

PDF

1.4 KB

MD5: d2ae96aaa05c02897aac091c2b1602b8 SHA-1: ad4d075a0870fb89e22d1e8b79206f28b8b15bf1 SHA-256: ca5789ab19f3db31ead7cff71d872abe14fedfb70e69ba5cbf67755b6226bb17

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability, specifically targeting the media.newPlayer function. This exploit is designed to execute arbitrary code, likely to download and run a secondary payload. The presence of multiple JavaScript streams and the critical ClamAV detection further support this assessment.

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-14185 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-14185
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` `32c7cf69583a8fd5445921d1b34d62d7030c7565a41fce06c9c38b816d30cd90`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1262 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` `4b3ee864ec56067ebc0401245870940253dc2c48cc5391fb585b68ab6bb8be37`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x485	251 bytes

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