Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e7374e993b8f20…

MALICIOUS

PDF

48.4 KB Created: 2021-06-03 09:36:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 668bcbb6b8c1f4e55d60553feb8fcab9 SHA-1: c669bf6139e427b973cf9d9510a453936946dfbf SHA-256: 71e7374e993b8f205cb1300ae469121e9bcfeff1c956c7b354b8e17e43769c8a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.online/app/431946152/how-to-hack-roblox-admin-commands-script-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.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_004_off00004e7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7A 28268 bytes
SHA-256: 087149c74b67075ecdeeae08984b64b9b01ddc2e5622cee4d0045dbfdee5ebd5
font_01_sfnt_off00008e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E02 2832 bytes
SHA-256: 78e89c8f621d90011ffb7a2107d701d4cdf090a2f2cf42d5a65297289afc8805
font_02_sfnt_off000097b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B3 19180 bytes
SHA-256: d9ff9961bf490d98f7b49e47000c117415543948f003b9db45c492fdba26154a

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