Viruses in the WordPress theme, or is the antivirus wrong?

Question

Antivirus

I use Graphene themes. I checked the Antivirus plugin, and it gave the following result:

/themes/graphene/admin/options-import.php

function graphene_import_<b>file</b>() {
if ( ! WP_File<b>system</b>( $creds ) ) {
} // Closes the graphene_import_<b>file</b>() function definition

/themes/graphene/includes/theme-utils.php
$content = <b>file</b>( $<b>file</b> );

Is this a bug or is it really a virus?
I visited to delete the highlighted code, deleted everything, as the last code was deleted, the site crashed. Restored. Looks like he deleted something important.

Answer 1

Valery Ryaboshapko wrote correctly, it is necessary to analyze the entire code.
Additionally, check the site with the TAC plugin - this is a plugin that finds malicious code on your site and hidden links.
And it would be nice to check through AI-Bolit - this is a free scanner for viruses, hacker shells, backdoors, spam mailers and other malicious scripts on the hosting.