This question already has an answer here:
I have seen a similiar post to this a while back (Is it possible to export geospatial PDF from QGIS via GDAL/OGR?), and thought I would try asking it again to see if there has been any improvement or new knowledge on this.
Is it possible to export one PDF with multiple layers like the picture shows?
The above shows a Raster image (WMS) and 4 different Vector layers, is it possible to get all these into one PDF as different layers? As shown below, where you can click/unclick each layer?