PDF malware analysis — malicious · 70fc94ad0e392f6e

MALICIOUS

PDF

69.5 KB

MD5: 39ef4acabd4aa578c1640b85cc790c49 SHA-1: bf48be9ed3baf7531db79420f6fba7ac55b3a5be SHA-256: 70fc94ad0e392f6e7baf2a6d7dc144e7fbc5033b76a626f19b21aafb480d2af5

100 Risk Score

Malware Insights

MITRE ATT&CK

T1055 Process Injection

The PDF file contains a Base64-encoded PE payload, identified by the PDF_BASE64_PE_PAYLOAD heuristic. This payload is likely intended to be decoded and injected into a running process using APIs such as VirtualAllocEx, WriteProcessMemory, and CreateRemoteThread. The ML classifier also strongly indicated maliciousness.

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

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