At linux level, you can already remove rkhunter which is completely outdated, You will find nothing.
To find infected binaries, you will get better results using :
yum install clamav
freshclam
mkdir /home/quarantineclam
/usr/bin/clamscan -ri --move=/home/quarantineclam --max-filesize=50M --exclude-dir=/home/ --recursive=yes / >> /var/log/serverscan.txt
cd /home/quarantineclam
watch -n 3 "ls -ltr"