Could a chinese malware extension copy my personal files that are locally on my chromebook [duplicate]

I saw a kind of extension with a chinese name (chinese letters) on my chromebook. Could this extension copy my personal file (like mp3 music I composed and photoshop files of my logos) that are locally on my chromebook, to their server ? Or does an malware app or extension can only copy cookies or typed passwords… do I have to worry about my files to be copied by malwares ?