Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b3657a6c53eaca…

MALICIOUS

PDF

43.9 KB Created: 2021-06-04 03:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e05c5552213d4f157857a2c2b8375192 SHA-1: 2646ec7e5c24dac7b8b52feabedee3bbb2bb344b SHA-256: 94b3657a6c53eacaf302e98433933890d6456e13c1a2eee17728b8bd3f2aa70a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for linking to a game hack lure, specifically mentioning 'Coin Master Free Coins And Spins'. The embedded URLs, such as https://netcdn.online/app/406889139/coin-master-free-coins-and-spins-today-game-hack, reinforce this lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content or phishing pages.

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-coins-and-spins-today-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/tiktok-free-view-iphone-apps_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/pokemon-go-free-2021_GM1094591345.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-dungeons-download-free_GM479516143.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_off0000511a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511A 24440 bytes
SHA-256: 467a4e53a34b40477c5a9d2ba5277efb844ef50798348cc870273828ef2a5306
font_01_sfnt_off000088ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FF 18240 bytes
SHA-256: 4e9460ee7c922f2330eb91d2df2ab210a384988491c8b06196f83513902e5b38