PDF malware analysis — malicious · 4b15a880d5a0300d

MALICIOUS

PDF

289.4 KB

MD5: 7dfb7e464b5e354b632a561c4ad59ae1 SHA-1: 7bc1296489b965842c6f874834d8857bf6f0e832 SHA-256: 4b15a880d5a0300d650df1cb0e7a250ecd37f386d0e67c8e50ef36e8a16b3d8c

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded script content and a launch action, indicating it is designed to execute malicious code. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded script appears to be obfuscated PowerShell, likely intended to download and execute a second-stage payload from a remote location.

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-7212127-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7212127-0
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_000482d9.bin` `b48d66d71709f7a4e557ae6edb399e65a7d48ab00f7c5f440b95cf5159817392`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D9	296230 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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