are a group of programs that hide their purpose to avoid analysis and detection by your security software. To do this they use a combination of encryption, compression, anti-debugging and anti-emulation techniques.
These techniques are used by a number of different kinds of malware. The malware that lies "underneath" can have almost any purpose.
This detection covers a broad range of different malicious programs. There are no symptoms that are specific to a Win32/Obfuscator infection.