PDF malware analysis — malicious · 278a53736cc5d997

MALICIOUS

PDF

289.4 KB

MD5: af00febbb174345dfe59626139fcc61e SHA-1: 1c713abc6939f49671c887af8701e7be40d09a4a SHA-256: 278a53736cc5d9977627b8337b748c95d4037bf24a830b7576eed792c0375e00

210 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.003 Windows Command Shell

This PDF file contains an embedded script payload and a launch action, indicating it's designed to execute malicious code. The script appears to use cmd.exe to construct a command that leverages WScript.Shell to write a file and execute it, likely to download and run a second-stage payload. The ML classifier and ClamAV detection further 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_000482d6.bin` `3222d141292c22f85e5d66047ed24d26abf8e16535331b069cd3d15f0f3cd228`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482D6	296227 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).

Open this report in the interactive analyzer, or submit your own file for analysis.