Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f76e150e806f56…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 09:02:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 68e7fce6395592f5ef45b6c16c6911f7 SHA-1: 20b1947664880e438adda94c46bc01b3434be83f SHA-256: 84f76e150e806f565648dda6fee76c4f5b7b0f6fc805c7069ff1512f76a3be2e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs, with a primary focus on game hack generators for popular games like Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest a phishing or social engineering attack aimed at tricking users into visiting malicious domains, likely for malware distribution or credential harvesting.

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-free-link-app-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-on-roblox-app_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/case-clicker-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cheat-codes-for-roblox-candy-war-tycoon_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-catalog-roblox-hair_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-cursor-hack_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-promocode-roblox-november_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/raidoijh-games-hack-for-roblox-fee_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-egghunt-2021-cheat_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-catalog-heaven-free-banned-weapons_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/youtube-robux-hack-html_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-roblox-vampire-hunters-2_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-that-really-works_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_off00003043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3043 22840 bytes
SHA-256: 553600d20ba39d374fda4a8604df715d049e8e28e2726567ca74519a353bff77
font_01_sfnt_off0000637e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637E 18344 bytes
SHA-256: 31551953d011482b0d46d086addc86e7e083de2f1ea25a6008bace3091db76b0

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