Dreaming of being attacked by a crazy person is a sign of unexpected problems in life as per dream meaning and interpretation. You will need to be careful after seeing such a dream. The upcoming troubles in your life will be due to actions of other people.
The dream also means that you might face physical assault. You will be confused and might not know how to react to the situation. It might be in public places.
The dream also means that you should avoid being alone while doing charity or while helping people. Some people might trick you by acting as not normal or poor. They might be trying to take advantage of you. Just be careful about your philanthropic activities.