PDF malware analysis — malicious · 07ebacf1a49cda88

MALICIOUS

PDF

289.4 KB

MD5: 6a5cadb1106efbe46f2f7ab036640b4d SHA-1: 64abafb4fc3c56883c8b3ce4e9c4c7eec09641b1 SHA-256: 07ebacf1a49cda88685c524c00ae62a4377d3028a2bae546e928514c8ed8e06b

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. This script is likely malicious, as suggested by the ML_NYX_PDF_MALICIOUS classifier and ClamAV detection. The PDF_LAUNCH heuristic further confirms that the document is configured to execute an action, likely involving the embedded script. The extracted artifact 'embedded_pdf_script_000482da.bin' is the primary IOC.

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_000482da.bin` `2af20b83a140b5c6ad997e819d7cb427395d23e4e2b10f470dbc5e20169a44bd`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482DA	296231 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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