Need Solution for Phishing Emails

Recently we had a phishing attack where attacker triggered each email from different email ID with different Subject. Here the common point is he sent .pdf in all emails and password for each file is again different. here is the details format

Sender address: wedvgyeda@outlook.com

Subject: firstname.lastname : password (here firstname and lastname are reciepient's)

Is there any way to block these type of emails in future?