PDF malware analysis — malicious · 07ebacf1a49cda88

MALICIOUS

PDF

289.4 KB

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

210 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains an embedded script payload, indicated by multiple high-severity heuristics including 'PDF_EMBEDDED_SCRIPT_PAYLOAD' and 'CLAMAV_DETECTION: Heuristics.PDF.ObfuscatedNameObject'. The script is likely designed to download and execute a secondary payload, as suggested by the 'PDF_LAUNCH' action and the presence of script execution terms in the static triage. The ML classifier also strongly flags this PDF as malicious.

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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