PDF malware analysis — malicious · 49094caba68829fe

MALICIOUS

PDF

289.4 KB

MD5: 30ff20161ce297ff08eed1e4ba19b7e6 SHA-1: 70a02b2130b23fda1b0b49cb7417865e2eaad84f SHA-256: 49094caba68829fed5065171e09e8a3294f08323e395d1055727dae3ba397871

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.003 Windows Command Shell T1204.002 Malicious File

The PDF file contains embedded script content and a launch action, indicating it is designed to execute malicious code upon opening. The script is obfuscated but appears to use cmd.exe to interact with the file system and potentially download further payloads. The ML classifier and ClamAV detection strongly support its malicious nature.

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_000482e5.bin` `7411134bf4e72c8d3f7f8465bbbce8575959ae5557504d06fceff2c15dd4d583`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482E5	296242 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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