The joined file is a simple image JPEG which has been converted into PostScript with 'jpeg2ps'. The resulting PostScript file is only a wrapper around the JPEG file which is coded in ASCII85 inside. Acrobat Distiller 20.0 (Windows) converts into a blank file. However, it was correctly converted in Acrobat Distiller X and XI. It's also converted correctly by GhostScript. Remark: I have renamed the file image.txt because it was impossible to load a file with the extension ps. However, when changing the extension to ps, it's my file.