Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6e73790d7d1882…

MALICIOUS

PDF

44.9 KB Created: 2021-06-04 01:09:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f16e22599670c5e05064fa1b60383038 SHA-1: b9be280c6e60d4f35e01ea29cc988021da25abdc SHA-256: 0f6e73790d7d188204b39432101b694ed0bb16fa73649966973e31edbfbdd841
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a heuristic firing indicating it's a 'free generator / game hack' redirector. The primary malicious URL identified is https://netcdn.online/app/406889139/coin-master-free-pet-snacks-game-hack. This suggests the document is designed to trick users into visiting a site that likely hosts malware or engages in phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coin-master-free-pet-snacks-game-hack PDF link annotation
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/pokemon-go-free-coins-hack_GM1094591345.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C7 28972 bytes
SHA-256: 9631b94e38f5d04efbaf186901a861bec7ce603129b131e514cd4f7e4384c79a
font_01_sfnt_off00008df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF8 18036 bytes
SHA-256: 953f5cd717a05807ac22076ac5d46caab4361ce9efe73d5421b99624393f3c2c

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