the SAP NetWeaver Application Server ABAP 7.03 SP04 Trial welcome.html says:
In order to install the MaxDB Database Manager execute DBM76.exe, if you wish to install the SQL Studio execute SQLSTD76.exe.
I couldn't find DBM76.exe anywhere in the unzip folder, after downloading and installing ABAP_7_03_SP04_64_bit_Trial_3_9_2_GB