Hi @all,

is this a wanted behavior of clamscan ? 

# file /var/lib/nepenthes/var/log/binaries-2007-01-05.bz2
/var/lib/nepenthes/var/log/binaries-2007-01-05.bz2: bzip2 compressed
data, block size = 900k

# tar -tjf /var/lib/nepenthes/var/log/binaries-2007-01-05.bz2
binaries/0acb1b025e9efaa56d1260bc7791dfbf
binaries/df7dad3dffe099dab7fb0eeec71ca56d

# clamscan --tar --unzip --unrar --arj --unzoo --lha --jar --deb
--tgz  /var/lib/nepenthes/var/log/binaries-2007-01-05.bz2 
/var/lib/nepenthes/var/log/binaries-2007-01-05.bz2: OK

----------- SCAN SUMMARY -----------
Known viruses: 86098
Engine version: 0.88.7
Scanned directories: 0
Scanned files: 1
Infected files: 0
Data scanned: 0.07 MB
Time: 4.980 sec (0 m 4 s)

i extracted the files and created a rar with them 

# rar l /tmp/test.rar 

RAR 3.50 beta 1   Copyright (c) 1993-2005 Alexander Roshal   30 Mar 2005
Shareware version         Type RAR -? for help

Archive /tmp/test.rar

Name             Size   Packed Ratio  Date   Time     Attr      CRC
Meth Ver
-------------------------------------------------------------------------------
0acb1b025e9efaa56d1260bc7791dfbf     8192     8170  99% 05-01-07 22:47
-rw-r--r-- 96E66790 m3b 2.9
df7dad3dffe099dab7fb0eeec71ca56d    65440    62519  95% 06-01-07 00:13
-rw-r--r-- 6D7B3871 m3b 2.9
-------------------------------------------------------------------------------
    2            73632    70689  96%

# clamscan --tar --unzip --unrar --arj --unzoo --lha --jar
--deb --tgz  /tmp/test.rar 
/tmp/test.rar: RAR module failure

UNRAR 3.50 beta 3 freeware      Copyright (c) 1993-2005 Alexander Roshal


Extracting from /tmp/test.rar

Creating    tmp                                                       OK
Creating    tmp/binaries                                              OK
Extracting  tmp/binaries/0acb1b025e9efaa56d1260bc7791dfbf
OK 
Extracting  tmp/binaries/df7dad3dffe099dab7fb0eeec71ca56d
OK 
All OK
/tmp/clamav-cb6b7e652e3ad36a/tmp/binaries/0acb1b025e9efaa56d1260bc7791dfbf: 
Trojan.Sdbot-3656 FOUND
/tmp/clamav-cb6b7e652e3ad36a/tmp/binaries/df7dad3dffe099dab7fb0eeec71ca56d: OK
/tmp/test.rar: Infected.Archive FOUND

----------- SCAN SUMMARY -----------
Known viruses: 86098
Engine version: 0.88.7
Scanned directories: 3
Scanned files: 3
Infected files: 1
Data scanned: 0.13 MB
Time: 10.722 sec (0 m 10 s)
-- 
Michael Lang <[EMAIL PROTECTED]>

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