The URL http://%5C%5C172.17.0.24%5CWindows%5CLPPM%5C2005%5CKuliah%20Kerja%20Usaha%5C2005oha_oteng.pdf contains characters that are not valid in the location they are found.
The reason for their presence may be a mistyped URL, but the URL may also be an attempt to trick you into visiting a web site which you might mistake for a site you trust.