This file is indexed.

/usr/share/ghostscript/9.10/lib/ras8m.upp is in libgs9-common 9.10~dfsg-0ubuntu10.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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-supModel="SUN rasterfile, 8 Bit, 2 Colors (Error-Diffusion)"
-sDEVICE=uniprint
-dNOPAUSE
-P- -dSAFER
-dupColorModel=/DeviceGray
-dupRendering=/ErrorDiffusion
-dupOutputFormat=/SunRaster
-dupComponentBits={8}