Well, yes - you can select text but what can you do with it.
As an illustration, I've selected some text from your pdf:
and then copied and pasted into TextEdit with this result:
So you can see that a simple copy/paste won't work. I thought your pdf was a scanned document because that's what Tabula told me when I tried to process it.
Maybe there are other data extraction tools available, but I'm not sure KM can do it for you single-handedly.
There may well be someone here who can point out the error of my ways and be more helpful than me!!