PDF malware analysis — malicious · 84c859bae066fd43

MALICIOUS

PDF

69.5 KB

MD5: 399044d337075404f78c6989310d98e4 SHA-1: c46e06259536bfd2843be35507854d20fb415efa SHA-256: 84c859bae066fd43cb58dda0505fcc83389ee3f28111f852331ceda9f0e88e30

100 Risk Score

Malware Insights

MITRE ATT&CK

T1055 Process Injection T1566.001 Spearphishing Attachment

The PDF document contains a Base64-encoded executable payload, identified by the PDF_BASE64_PE_PAYLOAD heuristic. This payload is likely intended to be decoded and executed, utilizing process injection APIs such as VirtualAllocEx, WriteProcessMemory, and CreateRemoteThread. The presence of an embedded executable within a PDF strongly suggests a spearphishing attachment delivery vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9952

Heuristics 1

Base64-encoded Windows executable payload in PDF critical PDF_BASE64_PE_PAYLOAD

PDF text contains a long base64 blob that decodes to a verified Windows PE executable. This catches payloads hidden after EOF, inside comments, or in plain text outside normal PDF streams.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`base64_pdf_pe_000002fe.exe` `cac25a0c85ff0522a7105b86ac53326b6c5a8b9031d9ab76d5f39249c561bd20`	embedded-pe	PDF raw base64 PE payload at offset 0x2FE	52736 bytes

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