Replacing/deleting encrypted code on my site

Hi

I’m new to php and wordpress.

I was trying edit the footer of my site to delete some links that were placed there when I first received the Template and upon doing so got a messege on my site saying “This theme is released free for use under creative commons licence. All links in the footer should remain intact. These links are all family friendly and will not hurt your site in any way. This great theme is brought to you for free by these supporters.”

After doing a bit of research I found that this may be linked to some encrypted/malicious code located in my functions.php

After searching I found 4 sectiong of encrypted codeand tried to remove them. The problem is that when I attempt to remove them my site stops unctioning all together.

Is there a way to safetly remove or replace these sections and have my site functionign again?

The 4 sections are;

eval(base64_decode('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'));

eval(base64_decode('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'));

if(!function_exists('get_sidebars')) {
	function get_sidebars($args='')
	{
		eval(base64_decode('Y2hlY2tfdGhlbWVfaGVhZGVyKCk7'));
		 get_sidebar($args);
	}
}

mytheme_admin_init();
eval(base64_decode('ZnVuY3Rpb24gY2hlY2tfdGhlbWVfaGVhZGVyKCkgeyBpZiAoIShmdW5jdGlvbl9leGlzdHMoImZ1bmN0aW9uc19maWxlX2V4aXN0cyIpICYmIGZ1bmN0aW9uX2V4aXN0cygidGhlbWVfZm9vdGVyX3QiKSkpIHsgdGhlbWVfdXNhZ2VfbWVzc2FnZSgpOyBkaWU7IH0gfQ=='));
add_action('admin_menu', 'mytheme_add_admin');