Go this from here: https://upcloud.com/community/tutorials/scan-centos-server-malware/
Follow this commands:
Install:
sudo yum install clamav clamav-update clamav-scanner-systemd clamav-server-systemd
You need to configure the example file like this:
sudo sed -i -e "s/^Example/#Example/" /etc/freshclam.conf sudo sed -i -e "s/^Example/#Example/" /etc/clamd.d/scan.conf
Now lets update it:
sudo freshclam
Now let’s scan the home directory:
sudo clamscan -r /home
If you want to delete the infected files automatically you need to use this command instead:
sudo clamscan -r --remove /home