MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1059.003 Windows Command Shell
T1204.002 Malicious File
The PDF file contains a launch action that targets cmd.exe, indicating an attempt to execute arbitrary commands. The embedded script payload, though truncated, suggests the creation of a VBScript file named 'vbs1.vbs' and the use of ADODB.Stream, likely to download and execute a second-stage payload. The reconstructed command line is: cmd.exe /c echo Dim BinaryStream > vbs1.vbs && echo Set BinaryStream = CreateObject("ADODB.Stream"
Heuristics 3
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Launch action critical PDF_LAUNCHPDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
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/Launch action target: cmd.exe critical PDF_LAUNCH_COMMANDPDF /Launch action specifies an executable target with parameters '/c echo Dim BinaryStream > vbs1.vbs && echo Set BinaryStream = CreateObject("ADODB.Stream"' — references a known-dangerous executable (cmd, PowerShell, etc.).
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Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOADPDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_pdf_script_000033ce.bin40abd21cc16d7f47deccc3a181fad013ee9391fed16bacfc36cd3459490f7ecc |
pdf-embedded-script | PDF decompressed stream script payload at offset 0x33CE | 90 bytes |
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