The former One Direction member and now a solo act, Malik is featured on the tweet in a dark, moody pic, sporting close-cropped hair.
The front page of his Tumblr features his name in huge letters atop a volume of MRI brain scan images, Billboard reported.
Other images are a collage of video clips, pics from photo shoots and recent profiles.
Since exiting One Direction 16 months ago, Malik has zoomed to the top of music charts with his first solo effort Mind of Mine. He has also become somewhat of a fashion icon, sporting super model girlfriend Gigi Hadid by his side.
Malik revealed some of his "first times" in a recent interview with Glamour.
He calls his "Mum" first thing every morning and was the first to listen to his new album. His first tattoo was his grandfather Walter's name spelled in Arabic and Michael Jackson's Thriller was his first musical inspiration.
Malik said he "does something weird" with old friends "We communicate with words."
He loves to eat home-cooked food when he gets to his home town of Bradford, England, and a big Bob Marley fan, if he had a chopper in his backyard, he said, he'd fly to Jamaica.