PDF malware analysis — malicious · 11cf5310d45f1fd7

MALICIOUS

PDF

289.4 KB

MD5: f145a745db0bc463046338880d0a6c7c SHA-1: 1327ea9cee49f4e00a55b4156a545454a0019706 SHA-256: 11cf5310d45f1fd74c3839ae00becf8067bd96fdcd837b3d81b011bb56c31707

210 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The PDF file contains an embedded script payload and a launch action, indicating it is designed to execute code. The embedded script, identified as JavaScript, likely downloads and executes a second-stage payload. ClamAV detection further supports its malicious nature as a dropper.

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-7230575-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7230575-0
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_000482d7.bin` `7f7bef1d65887a38e74b79a1e3b78e1f133d93a9037997206745db0ddc60aea4`	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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