PDF malware analysis — malicious · f144cffe9b6829c4

MALICIOUS

PDF

1.4 KB

MD5: 34f46122c89b763b4300fb42fe5bde07 SHA-1: a5c988de6a49e478f4d153c9e36fd69a11899f2f SHA-256: f144cffe9b6829c419d3b7ddc1095a3520092294c6a4044e700f046cf5667c15

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File Execution

The PDF document contains embedded JavaScript, which is executed via the CVE-2009-4324 vulnerability. The JavaScript is obfuscated and uses unescape() for decoding, indicating a malicious intent to likely download and execute a second-stage payload. The primary IOC is the CVE identifier itself, as the exploit is directly referenced.

Heuristics 5

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)
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` `2d203dded4f481260ad7ed4c4a0176f29a8e0d53218c06f628de7774d2a6095e`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1268 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` `8b5a5e69243cddf3cadcce8e5604b6bcb4d68acf51c0557efb0c30c0e2ea21ab`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48F	265 bytes

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