PDF malware analysis — malicious · 51cbbdcf48d3cdbc

MALICIOUS

PDF

1.4 KB

MD5: 27eee05ff2e22902c2faf50d71ce2d18 SHA-1: 4dac7c33fa9545b0ecb2dca876eda902395c47f6 SHA-256: 51cbbdcf48d3cdbcc36e8d14a12a7f417857454b0623b4573acb92228fcf1f3d

180 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 related to the media.newPlayer object. This exploit is designed to execute arbitrary code, likely to download and run a second-stage 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-14400 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-14400
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` `9cb3b5e766d393899a322e50707bf47c6d02288b88f38609a96a6cee44c274ad`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1280 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` `ba226a23b660a8324866a10cc7aa239f4ca69ff325dc17f0caa003a6d4b2df0b`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48D	267 bytes

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