PDF malware analysis — malicious · 62eee5cf8be58562

MALICIOUS

PDF

289.4 KB

MD5: 21ba4319a117e382b604e15bfa3b85b9 SHA-1: cf0e921f77c8cbfcf1ae54c25f540169a750e932 SHA-256: 62eee5cf8be58562fffd74d206ef757ceae09f0508f28f97a53c658ce1265dd3

210 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains an embedded script payload, flagged by multiple heuristics as malicious. The script is likely designed to download and execute a secondary payload, as indicated by the 'PDF_LAUNCH' and 'PDF_EMBEDDED_SCRIPT_PAYLOAD' firings. The presence of obfuscated script terms further supports this malicious intent.

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` `50025bbd6cc14b2243156e50f5cdb97e148db74114e64be748ef2593b31753f2`	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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