Open Adobe Reader file in Sharepoint online

Hi,

Since few times i insert new pdf in our Sharepoint Online what i scan and they don't display. Only white page.

But if i insert a pdf I did it opens correctly.

I don't no why.

In pdf properties there are some differences. I insert 2 attachments : "pdf ok" (ok in Sharepoint) and "pdf ko" (doesn't work in Sharepoint).

* pdf ok :

*pdf ko :

Have you any idea?

Thanks for your answer.

Cordially