How can I open a Word pdf in Pages files?

You seem to have a collision of terminology in Word PDF. These are two separate document formats. Word documents can be opened (and translated) into Pages internal document format. Pages cannot open PDF documents, but you can copy/paste a single thumbnail from an opened PDF in Apple's Preview — into Pages as another document object.

"How can I open a Word pdf in Pages files?"

"… the original was made in iStudio."

If, as these two excerpts imply, the iStudio document became a Word (.docx) document somewhere along the path to becoming a PDF file, could you not attempt opening the .docx file into Pages?

You might also try copying the text from the PDF file. This is not always possible, depending how the pdf was created, but does work in some cases:

Screenshot from a pdf displayed in Preview:

Selected text, copied and pasted here:

Poem

Ladybird beetle

It is often called Ladybug but it is really a beetle. Bugs suck. Beetles bite, but rarely bite humans. Nursery rhyme to sing / chant:

Ladybird, ladybird fly away home,

Your house is on fire and your children are gone, All except one, and her name is Ann,

And she hid under the baking pan.

All I remembered were the first two lines. Did you know all four?

Regards,

Barry

Interesting. I got RTF Export from one of their FAQ questions about export formats — but probably older information. Didn't want to download their trial, and determine what current export formats are supported. So if not Word or RTF, that poses an interoperability issue.

If by iStudio, you are referring to iStudio Publisher, it can export to RTF, and Pages 10 can open RTF documents.