Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea5de2f5a5b7235…

MALICIOUS

PDF

36.5 KB Created: 2021-07-03 22:03:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fadadc287832bfa34f0d2b5b5718c38f SHA-1: 4e1ceba5777dc39ac2eae36394da4cc0bc883b4d SHA-256: 2ea5de2f5a5b7235bfebbc2f06524e927f11dc3ab081aa31477b94965132b327
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Hack" and a direct link to a URL hosted on netcdn.tw. This URL is flagged as a redirector for game hacks, indicating a social engineering tactic to entice users to visit a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-without-downloading-apps-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/como-conseguir-robux-gratis-sin-hacks-y-deverdad_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-island-2-script-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-superhero-body-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hacking-robloxs-account_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-tnt-rush-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-superhero-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-roblox-en-francais_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-upgrade-to-roblox-builders-club-free_GM431946152.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
font_00_sfnt_off00003434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3434 23396 bytes
SHA-256: ed79d39f53b4c834f6c6d8b950acf0484282654f21f91e2ae216a1eab5e9d101
font_01_sfnt_off00006934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6934 19264 bytes
SHA-256: 107d0b2f5720c59605693405bc5e5e12dddb779c904aed798fb77a039a66e8b0

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