PDF malware analysis — malicious · 32499005091df70c

MALICIOUS

PDF

289.4 KB

MD5: 9a4393600078a567f309a931ec9d6030 SHA-1: 910f7d8969f20f8e5317c0bcdb5dd48a69a4a0df SHA-256: 32499005091df70c52ffd5304d09d281ee8c4c1227783f1aa62f3a252bd17f99

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded script content, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. The DOC BODY excerpt reveals a command that appears to be constructing a script to download and execute a payload from a temporary directory. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics further confirm the malicious nature of the file. The script likely aims to download and execute a second-stage payload, contributing to the overall malicious intent of the PDF.

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_000482eb.bin` `7525a266cea190f69d20e239d2f265c4ab869ae9c8149381c050111b6eca51e9`	pdf-embedded-script	PDF decompressed stream script payload at offset 0x482EB	296248 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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