我刚开始使用 Ubuntu 18.04.1 版本，两天前，我收到一封来自受信任来源的电子邮件，其中包含 2 个附件，我将这些文件下载到我的桌面上，文件已加密并要求我使用密码登录才能打开，我也尝试打开这些文件。后来我发现发件人的服务器被黑了，那封电子邮件是来自黑客的。
然后我今天安装了 ClamTK 杀毒软件并运行扫描，结果如下。这些只是一个小样本，我的终端中有数百个这样的输出。这是什么？这是正常现象还是病毒？非常感谢
LibClamAV Error: fmap_readpage: pread error: Input/output error
LibClamAV Warning: fmap_readpage: pread fail: asked for 4087 bytes @ offset 9, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4094 bytes @ offset 2, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4087 bytes @ offset 9, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4091 bytes @ offset 5, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4088 bytes @ offset 8, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4075 bytes @ offset 21, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4074 bytes @ offset 22, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4094 bytes @ offset 2, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4095 bytes @ offset 1, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4095 bytes @ offset 1, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4072 bytes @ offset 24, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4093 bytes @ offset 3, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4089 bytes @ offset 7, got 0
LibClamAV Warning: fmap_readpage: pread fail: asked for 4091 bytes @ offset 5, got 0
----------- SCAN SUMMARY -----------
Known viruses: 6762421
Engine version: 0.100.2
Scanned directories: 59238
Scanned files: 337081
Infected files: 0
Total errors: 23210
Data scanned: 9843.74 MB
Data read: 15217.11 MB (ratio 0.65:1)
Time: 1794.555 sec (29 m 54 s)