I've never ascribed any particular malignant thing to Friday the 13th.
My favorite older brother was born on Friday the 13th.
But it does cause one to pause. I'm thinking of the case of a British ship (maybe the 18th century?--not sure) that was named the HMS Friday, and launched on Friday the 13th.
After it went out to sea, it utterly evaporated; was never heard from, or seen, again.