I would think those numbers are the look up table like those generated by the color calculator that write then into ICC profiles. String.fromCharCode(looks like an array of unicode number) The scriptlistener set code is likely copying the profile to the document meta data perhaps. I would think the Photoshop would have read the Profile lut its setting into the document.
It looks like you us a Mac I use Windows. The Photoshop .cube file seem to be in Presets\3DLUTs none withe the name in your screen capture. They seem to be text file. the lut table seems to be rows with three columns. of numbers blank(space) separated.