Wordfence detects PSN cache as malware

I use PSN Pagespeed Ninja on my site “https://dhruvrathod.com” and somehow Wordfence seems to notify every single day as showns below;

Filename: wp-content/plugins/psn-pagespeed-ninja/cache/73/734dcfb8b0d2d91accebbee525715df3be71d800.zz
File Type: Not a core, theme, or plugin file from wordpress.org.
Details: This file appears to be installed or modified by a hacker to perform malicious activity. If you know about this file you can choose to ignore it to exclude it from future scans. The matched text in this file is: \xed}}wӸ\xf2\xf0\xdfp\xce\xfd\x0e\xbe\xde\x03\xb4\x17

The issue type is: IOC:BIN/hiding.cache.10143
Description: Suspicious binary files

Can you please suggest, what are the steps I can take? Do I need to worry about this?