For the poor soul that had to read this, these are typical places people would answer. I literally walk through Gare du Nord every week at midnight and never even had a bad look. Sure, drug addicts and black market smokes, your typical poor area.
You are actually more likely to get mugged on the Champs Elysées or the 16th.
Here's a link to a "BeSafe" app to help you navigate Paris without being pickpocketed or shanked! https://apps.apple.com/us/app/besafe/id425631096