It is false detection of malware. fix for this will be available in next release.
You can fix now by doing below changes.
replace below function in qa-include/qa-theme-base.php file with this code.
public function body_hidden()
$this->output('<div style="position:absolute;overflow:hidden;clip:rect(0 0 0 0);height:0;width:0;margin:0;padding:0;border:0;">');
or you can just download below zip and update q2a.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.
April 20, 2021: Q2A 1.8.6 released!