No, ebook readers have no engine in them to run viruses. Question: Is downloading ebooks from Z-Library (b-ok.cc now 1lib.us ) illegal?
Also question is, can PDFs have viruses?
PDFs can have viruses that come embedded with a code that makes documents signable and (somewhat) editable. The mechanics are very similar to virus-infected Microsoft Word files. While their malware hides inside macros scripts, an infected PDF file will contain malicious JavaScript code.
In this regard, is Z-Library safe to use?
Thus shadow libraries are innately opposed to the law of copyrights. This makes Z-Library an Illegal website. Though their intentions might be in place, they make works available that they are not permissible, legally.