PDF malware analysis — malicious · 4a8b7f1876880b6a

MALICIOUS

PDF

270.7 KB Created: 2010-10-02 12:42:52 Authoring application: Microsoft® Office Word 2007

MD5: 5017c348fe83861bba6f5c10b23e893a SHA-1: 0bad6913a939297e7d6dbbe6982f6923c9f5dea2 SHA-256: 4a8b7f1876880b6a743ccc13c92c484f1db714b7a5374486d9e4414cbdc72a48

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains a critical PDF_LAUNCH heuristic firing, indicating a launch action. This action targets cmd.exe, which is further detailed by a PDF_LAUNCH_COMMAND heuristic. The embedded script payload, identified as 'embedded_pdf_script_0001dec2.bin', is likely responsible for the malicious activity. The script's purpose is to execute commands via cmd.exe, potentially downloading and running a secondary payload.

Heuristics 4

Launch action critical PDF_LAUNCH

PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
/Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND

PDF /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.).
Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF 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.
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_pdf_script_0001dec2.bin` `70f9937f7e57a74d6f35d6ad26d1b6b2b3a72dd10cf7ab0cca231f6654f1b428`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x1DEC2	277181 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.