PDF malware analysis — malicious · 90cdc0ba1e65f3d9

MALICIOUS

PDF

1.4 KB

MD5: 0c84fb8247946db24aa8d6985557a1ba SHA-1: f79e9a8611a02223cf07a02b3abd8c8aa821ee7e SHA-256: 90cdc0ba1e65f3d90db48d26bdf71d2962f0cb76c7158d56a12bdab31b50bb1c

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript that utilizes the unescape function and exploits CVE-2009-4324 via the media.newPlayer object. This indicates an attempt to execute arbitrary code upon opening the document. The ClamAV detection 'Pdf.Exploit.Agent-23875' further confirms its malicious nature. The primary attack vector is likely the exploitation of a PDF reader vulnerability.

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-23875 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-23875
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` `5f407ba91728594cc3335aae2b55c4384c7446b4d95639156d07ee0f063a8a7b`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1244 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` `4568f225ad9e9f09eda1ddfa0b80eba4b56ede86e465364abfbc8f21f0243cc6`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x484	241 bytes

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