This is a Red Hat icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 12,500 icons, all in the same style and quality.
Its an image of the logo for Red Hat. It's an image of the head of a man wearing a hat, with a circle draw around it. Within the circle the hat takes up most of the space, with little focus on the face.