PDF malware analysis — malicious · 5a2983f93edc7e61

MALICIOUS

PDF

55.1 KB

MD5: 0035499ddf793b9c70557835ce494e1b SHA-1: 6f9771a614163dd53ea7fc3ff30f4994e0125929 SHA-256: 5a2983f93edc7e619e0e1b41a4626de0e89f9c1f00d1e1d9346a7502f9d5d01c

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.003 Windows Command Shell

The PDF file contains a launch action that targets cmd.exe with parameters to create a scripting object. This indicates an attempt to execute a malicious script or command upon opening the document. The heuristic firings confirm the presence of a launch action and an embedded script payload, strongly suggesting the document is designed to deliver and execute 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 Set fso=CreateObject("Scripting.FileSystemObject"' — 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_0000d963.bin` `4ca33df84645eae1a5ac3829318d30259dfc1a33c7628367380f36bcfc09272e`	pdf-embedded-script	PDF decompressed stream script payload at offset 0xD963	56454 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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