Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d6655413d7d8eff…

MALICIOUS

PDF

32.5 KB Created: 2021-07-05 13:58:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0687b50e9646561a41c7dd1c0c44240b SHA-1: 41977d1415991b251c735fbe4c7276cc41cfc341 SHA-256: 9d6655413d7d8eff3c6a7f9515e770421ca2483128dd4bd1e6e2dfee71a6d0bd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document contains a lure related to game hacks and free generators, directing users to a malicious URL. The embedded link, http://netcdn.tw/app/479516143/minecraft-mojang-free-game-hack, is designed to trick users into visiting a site that likely hosts further malicious content or exploits. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/479516143/minecraft-mojang-free-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/free-robux-promo-codes-2021-not-expired_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-jeux-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-cool-t-shirts-free-marshello_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cbro-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/fnaf-free-roam-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/pokemon-go-hack-version-free-download_GM1094591345.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-hakercom_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-hacked-client-download_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
font_00_sfnt_off00002d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D28 21708 bytes
SHA-256: 458e5ee43f8581cab5e0e0f0a0ba884f647579b54d7ee2e2637b286ec82283cd
font_01_sfnt_off00005c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9A 18188 bytes
SHA-256: b5f50bf57dfccd752109e4182842bacf3724a00f1b96a34c084e43a5ee255f71

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