PDF malware analysis — malicious · 62b8ad9fb14e55de

MALICIOUS

PDF

289.4 KB

MD5: 4eb222b683b373676281fbb5ef416721 SHA-1: 8803238c17f996430ba2ed3fd079ca27b8828803 SHA-256: 62b8ad9fb14e55de1df8e2635ce9d4965bb91f672eee4554a66e9acc8a387044

210 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF file contains an embedded script payload, indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. This script is designed to execute a command-line instruction that likely downloads and runs a secondary payload. The ML classifier and ClamAV detection further confirm its malicious nature, classifying it as Pdf.Dropper.Agent-7266399-0.

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: Pdf.Dropper.Agent-7266399-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7266399-0
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_000482d8.bin` `7c365812eb443674094615f778021c21aa0f8e9e35462ff7bda4bf5bdf4332ce`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D8	296229 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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