PDF malware analysis — malicious · 0110dc1931faca00

MALICIOUS

PDF

289.4 KB

MD5: fa401d648832418fb4ea4863e2b519c1 SHA-1: ed4d2a746842b30a23bad17251bb2bf4e08197af SHA-256: 0110dc1931faca009fa55000483082c07ed642262e4606d9011e382b6f3cad44

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains an embedded script payload, indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. The 'PDF_LAUNCH' heuristic confirms that this script is intended to be executed. The script itself appears to be obfuscated, but the presence of PowerShell-related commands suggests it's designed to download and execute a secondary payload. The 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics further support the malicious nature of this file.

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_000482db.bin` `f6bc753af4e1f61d3625a514710c7eee388642efb99d010c208d02ff4ba0b026`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482DB	296232 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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