This is the NEF icon for Windows 10. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.
The icon is depicting a sheet of paper. The top right corner is folded down, forming a right triangle pointing inwards towards the center of the paper. The bottom of the triangle is about 1/5 of the way down the page. In the center of the paper are the letters NEF all capitalized.