PDF malware analysis — malicious · 4d344e92a23c8498

MALICIOUS

PDF

289.4 KB

MD5: 86568c10bf1ba00dbb15f1816ba8ce68 SHA-1: 080ff4ca60b18de333ee3010ad0c722e27f132e8 SHA-256: 4d344e92a23c84984e53012b89425958983cb0fd6a76a9e9236f6e1fa64a6d8b

212 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded script content, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The DOC BODY excerpt suggests the script is designed to execute commands via cmd.exe, likely to download and run a secondary payload. The PDF_LAUNCH heuristic further confirms the file's intent to trigger an action, and ML and ClamAV detections strongly indicate maliciousness.

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_000482d6.bin` `7518c336424a1626576eafb376ddf64c1ac5333b75f6ef4222e2a931bf386b5b`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D6	296227 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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