PDF malware analysis — malicious · d18d900ccf875d19

MALICIOUS

PDF

69.5 KB

MD5: a23a9651bf4e1efc69c1087a5a83c275 SHA-1: 57b454690df4f59f024c8c945c4d81d5f4024e8d SHA-256: d18d900ccf875d1937cd2a56cd00c4a1340e2c690a6784a78341be8e32722697

60 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1105 Ingress Tool Transfer T1027 Obfuscated Files or Information T1204.002 Malicious File

The PDF document contains a Base64-encoded Windows executable payload. The heuristic indicates that this payload is decoded and likely executed using process injection APIs such as VirtualAllocEx, WriteProcessMemory, and CreateRemoteThread. This suggests a downloader or dropper functionality, where the PDF acts as a container for the malicious executable.

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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