I received a pdf file created by pdflatex / miktex on windows.

Running pdftotext 0.24.3 on it produces very strange results:

original text:
Die Organisation der Flugrettung in
Österreich 

pdftotext output:
❉✐❡ ❖r❣❛♥✐s❛t✐♦♥ ❞❡r ❋❧✉❣r❡tt✉♥❣ ✐♥
Öst❡rr❡✐❝❤ 

Some sort of glyph conversion problem?

The problem is reproducible. I installed miktex on my windows VM, ran pdflatex on the tex file and got the same results.

I did a number of checks on the pdf with adobe acrobat and various tools and it seems valid. Unfortunately, I do not own the file and cannot attach it here.

pdfinfo says: 
Creator:        LaTeX with hyperref package
Producer:       pdfTeX-1.40.12

pdffonts output:
[none]                               Type 3            Custom           yes no  no     303  0
[none]                               Type 3            Custom           yes no  no     304  0
[none]                               Type 3            Custom           yes no  no     305  0
[none]                               Type 3            Custom           yes no  no     306  0
UEIZYW+CMSY10                        Type 1            Builtin          yes yes no     307  0
FRNIHB+CMSY8                         Type 1            Builtin          yes yes no     308  0
[none]                               Type 3            Custom           yes no  no     348  0
[none]                               Type 3            Custom           yes no  no     349  0
[none]                               Type 3            Custom           yes no  no     350  0
[none]                               Type 3            Custom           yes no  no     435  0
[none]                               Type 3            Custom           yes no  no     436  0
[none]                               Type 3            Custom           yes no  no     470  0
[none]                               Type 3            Custom           yes no  no     480  0



Nothing unusual in the tex file either.

\usepackage[german]{babel} 
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amssymb, amsmath} %arithmetic symbols, math enhancement package
\usepackage[round]{natbib} %bibliography
\usepackage{graphicx} %figures
\usepackage{hyperref} %hyperlinks
%% additional packages
\usepackage{tipa} %phonetics

Strangely this problem does not occur if I create the pdf on Linux.