PDF malware analysis — malicious · 381350df3c7bd625

MALICIOUS

PDF

289.4 KB

MD5: bd9c29a1987803df90466029440f2e6f SHA-1: 08dab12483f84c84d409573458ee6d244e7bffca SHA-256: 381350df3c7bd625a2541d87aee986637036d8fae4f599d985dc9d1677cf9a4f

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded script content and a launch action, indicating an attempt to execute malicious code. The extracted script content, when reconstructed, appears to be a PowerShell command designed to create a file named 'evil.pdf' in the temporary directory. This suggests the file is a dropper or downloader for further malicious activity.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_000482d7.bin` `10c53a26931f44b4083b5c599fd3e2ae480774bc744fd5b0891350295246de56`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D7	296228 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s). Carved artifact contains 1 long hex-escaped blob(s).

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