Malicious PDF — malware analysis report

Static analysis result for SHA-256 cedba357c0c0f2f7…

MALICIOUS

PDF

49.4 KB Created: 2021-04-29 07:59:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2e99e6a763acca3012cdb450e901144f SHA-1: 6db8e4507d0614746f6f7446072a2ec7366c1c9d SHA-256: cedba357c0c0f2f7a35d437cf1f1a30149f9cf1fc0503f7a60c6be98b28d54d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains heuristics indicating a browser installation lure and a visual download button, suggesting a social engineering attack. The embedded URL points to a suspicious domain, likely serving a malicious payload. While no scripts were directly extracted, the PDF structure and external URL suggest it's designed to trick users into downloading and executing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.xyz/app/431946152/free-robux-ohne-verify-game-hack PDF link annotation
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-bird-simulator-hack-script.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-8-robux-free.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/blue-boy-hack-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-games-to-download-like-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/shirt-roblox-2021-free-dowload-transparent.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/triga-cheat-engine-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/case-clicker-cheats-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-generator-unblocked.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-number.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-hack-someone-in-roblox-on-ipad.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000043cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43CC 27444 bytes
SHA-256: efc9023a6f2eb9b0039429d7460eec3921e06692c4558d41d516c61a48de4746
font_01_sfnt_off000083ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83AC 11440 bytes
SHA-256: 154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e
font_02_sfnt_off00009ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECD 18612 bytes
SHA-256: 40aae9cdd576c25eea74a8a3a985a0b4088c077e23786ac5a55d8bbca7c90b1d

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