PDF: How to change/decode stream into text? - pdf

Question

The document contains only Text no images the relveant portions of the PDF are as under:
trailer
<</Root 1 0 R>>
1 0 obj
<</Type/Catalog/Pages 3 0 R>>
endobj
3 0 obj
<</Type/Pages/Kids[4 0 R]/Count 1/Rotate 0/ITXT(5.0.6)>>
endobj
4 0 obj
<</Type/Page
/MediaBox[0 0 612 1008]
/Rotate 0
/Parent 3 0 R
/Resources<<
/ProcSet[/PDF/Text]
/ExtGState 12 0 R
/Font 13 0 R>>
/Contents 5 0 R
/Annots[24 0 R]>>
endobj
12 0 obj
<</R7 7 0 R>>
endobj
7 0 obj
<</Type/ExtGState /OPM 1>>
endobj
13 0 obj
<</R8 8 0 R
/R10 10 0 R>>
endobj
8 0 obj
<</BaseFont /LRSXWR+TimesNewRoman
/FontDescriptor 9 0 R
/Type/Font
/FirstChar 1
/LastChar 41
/Widths[
333 722 250 611 722 611 722 667 722 722 667 556 556 389
722 667 722 722 500 333 444 389 500 278 278 500 333 500
444 500 278 250 889 250 500 500 444 500 278 778 500]
/Encoding 16 0 R
/Subtype/TrueType>>
endobj
16 0 obj
<</Type/Encoding
/BaseEncoding/WinAnsiEncoding
/Differences[
1/I/N/space/T/H/E/G/C/O/U/R/F/P/J/A/B
/D/Y/asterisk/r/e/s/n/t/colon/o/f/h/a/p/l/period
/M/comma/d/v/c/two/i/m/u]
>>
endobj
The above information is provided for requirements purposes, the content object which I want to decoded as:
5 0 obj
<</Length 5950>>
stream
q 0.12 0 0 0.12 0 0 cm
/R7 gs
0 0 0 RG
0 0 0 rg
q
8.33333 0 0 8.33333 0 0 cm BT
/R8 14.0388 Tf
0.997231 0 0 1 90.1533 922.927 Tm
[
(SOH)-0.762768(STX)10.3078(ETX)10.019(EOT)10.888
(ENQ)-6.34593(ACK)10.888(ETX)-7.12126(ENQ)2.22552
(SOH)7.32006(BEL)-6.34489(ENQ)10.797(ETX)-7.1223
(BS)7.04592( )-6.34489(\n)10.797(VT)49.899
(EOT)28.0288(ETX)-7.12126( )2.22552(FF)-0.944827
(ETX)10.0196(\r)-0.945874(\n)-5.8573(STX)10.3083
(SQ)-13.6649(SI)10.798(DLE)-10.097(ETX)52.8727
(SI)11.2835(STX)-6.83247(DC1)2.22657(ETX)10.0175
(ENQ)-6.34489(SI)10.798(VT)49.8969(DC2)105.076
(SI)11.2856(STX)-6.83457(SI)53.6511(ETX)61.442
(SI)105.076(EOT)28.0288(ETX)-7.12335(BS)-1.52554
(ENQ)2.22657(SI)11.2835(STX)-6.83247(DC1)10.798
(SOH)-9.82286(BEL)2.22657(SI)
]TJ
412.949 0 Td
[(VT)-1.52763(ENQ)722.166]TJ
.......
.......

Answer 1

Decoding of PDF stream into text is not very simple, because you don't have anything like text there.
You have series of glyhps with very vairable meaning. In your case, you use font 13 0, that consist of 41 characters of /LRSXWR+TimesNewRoman with changes defined in obj 16 0, that has explanations of meanings of glyphs. You must have some translation table from "space" to " " (I'm quite surprised, that there is a glyph for space in your case). This may not be so simple in other cases. I've seen many times, that there was an embeded font with glyphs sorted by usage and there was no other than visual evidence, what which glyph may represent.
Are you sure you want to read the text from pdf files?