Weird Links Appear on My Word Press Installation

I have a clients site that seems to have been hacked. But the weird part if you go to the site itself its fine. https://www.plantationshuttersnj.com but there are these hidden page like https://plantationshuttersnj.com/sherlock-holmes-2-32515-free-720p. I have tried re-installing WP. also updated all core file in theme but its still there. any ideas what Im dealing with here.