Hi,
here are some links that may guide you.
https://codex.wordpress.org/FAQ_My_site_was_hacked
https://www.wordfence.com/docs/how-to-clean-a-hacked-wordpress-site-using-wordfence/
http://www.wpbeginner.com/beginners-guide/beginners-step-step-guide-fixing-hacked-wordpress-site/
http://www.wpmayor.com/best-plugins-for-fixing-hacked-wordpress-websites/
check all of them