This CR2 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 4,300 icons, all in the same style and quality.
The icon for CR2 is shown as a piece of paper. The paper is rectangular in nature, and its top right corner is folded over, so that you can see a small triangle representing the fold. In the center of the paper is written CR2.