PDF malware analysis — malicious · 52db07fb631758ad

MALICIOUS

PDF

1.4 KB

MD5: de415a28ab1ff0eb1d43cf925b738a67 SHA-1: 6eefea92efb5ac71f76acfaff1c54f07b42e144f SHA-256: 52db07fb631758ad26d323d55a40f5d65c3c6d2c52aa6d829b5150f6f1156503

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability via the media.newPlayer object. This vulnerability allows for the execution of arbitrary code, likely to download and execute a second-stage payload. The ClamAV detection of Pdf.Dropper.Agent-7212730-0 further supports its malicious nature as a dropper.

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-7212730-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7212730-0
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` `e7d2a9411b7ab8f547cc31230b628a85d13b66e8de283a562ed9050bbeb9ab5e`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1257 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` `29c5ab694e84bbee21c8f93639d23d36a167d85b8701943ad0105eaa008d7c47`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x488	247 bytes

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