Converting files (standard color Lookup Tables or LUTs) to (Lightroom/Adobe Camera Raw profiles) is a common workflow for photographers who want to use cinematic color grades in Adobe Lightroom.
Once you have the XMP string, embed it into images/PDFs via exiftool: convert-cube-to-xmp
The most reliable and "official" way to perform this conversion is through Photoshop's Camera Raw filter. This process embeds the LUT data into an XMP profile. Open any image in Photoshop and go to Filter > Camera Raw Filter Access the Profile Creator : In the Presets/Profiles tab, hold Alt (Windows) Option (Mac) and click the New Preset (three-dot icon) Create Profile Load the LUT : At the bottom of the dialog box, check the Color Lookup Table box and navigate to your Name and Save Converting files (standard color Lookup Tables or LUTs)
What is XMP?