I have the same problem. Obsidian crashes on two different Android devices, with two different versions of Obsidian, when I try to display a page referencing a 95kb .pdf
Then repeatedly crashes every time I reload Obsidian as the page containing the .pdf is displayed as the default page on launch. This renders Obsidian unusable until I re-sync my vault, which clears the default page and displays the ‘no page’ message.