Hex-Rays IDA Pro is the most powerful and popular commercial disassembler/debugger (https://www.hex-rays.com/products/ida/index.shtml); it is used by reverse engineers, malware analysts, and vulnerability researchers. IDA can run on various platforms (Windows, Linux, and macOS) and supports analysis of various file formats, including the PE/ELF/Macho-O formats. Apart from the commercial version, IDA is distributed in two other versions: IDA demo version (evaluation version) and IDA Freeware version; both these versions have certain limitations. You can download the freeware version of IDA for non-commercial use from https://www.hex-rays.com/products/ida/support/download_freeware.shtml.
You will need to download the free version in your Ubuntu Linux VM and install. You will also need to read the two attached and then complete the Lab 5. The file you need for Lab 5 can be found from your hands on assignment #3 when you downloaded files from Practical Malware Analysis. You will find the file in Chapter 5. I would like you to provide screenshots of everything you do as usual. You will have to do some searching for some extra tutorials on IDA Pro if needed. remember when doing the lab, the more detail and screenshots the better so I can follow what you did.