You did not give enough information. Running your data through file: 
echo '0000000 ff fe 3d 00 20 00 70 00 61 00 67 00 65 00 20 00
0000010 31 00 20 00 3d 00 0a 00 0d 00 0d 00 0a 00' | xxd -r | file -

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Output: 

Little-endian UTF-16 Unicode text, with CR, LF line terminators

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Can you try removing characters from the end of a misbehaving file until it becomes "text", then post the offending character?

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: Weird file type problems transferring from Windows to Mac OS by choroba
in thread Weird file type problems transferring from Windows to Mac OS by agaved

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