This Advertisement Page icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,500 icons, all in the same style and quality.
The object is a box with a line across the top so that it is two spaces with the one on top being very narrow. There are three dots on the left side of the top portion. There is an arrow starting at the bottom left corner of the large portion of the box and it points diagonally to the top right corner of the box.