Tap on the Dr.Web icon on the notification panel. In the succeeding window you will see all the available information about the threat. Tap on this message, then select the desired action: delete the file, place it into the quarantine, or ignore the warning.
Warning! It is not recommended to choose the Ignore option! If you believe that the anti-virus has made a mistake, select Quarantine and after that send the file to Doctor Web for a detailed analysis.