Preview Generator 1.0.1 runs forever on certain PDF file

Ubuntu 16.04.1 x64

I’ve uploaded a PDF to my NC instance with contains 2 pages only.

Now Ghostscript runs forever while executing

occ preview:pre-generate

No warnings, no messages in the logs.

Here the PDF in question:!cElQ2D7B!vCYuG-GqyxRDo_DV62WfrBglBCNFfNDLrefNFtjH2oc

Not encrypted, no password, no restrictions else.