Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebf46ae6c140a50…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 09:52:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8d896c987e94affb1099c0b51513f158 SHA-1: 1b073d7e86e9e011d33edcef5c440b80b9ddaf0b SHA-256: 5ebf46ae6c140a5094898c3acaac6bd70ec75c0e95d71ad9f544fd14822e9010
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/free-roblox-avatar-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/get-free-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/quick-and-easy-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-for-rubux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-de-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/infinite-health-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-marketplace-sell-for-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-fan-page-free-spins_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
font_00_sfnt_off00003338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3338 22456 bytes
SHA-256: 5815d14acd185053f5a3ec08bc04a8f3aabd0b8c4c30d7d31da4f7394112c6bb
font_01_sfnt_off000065c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C9 18868 bytes
SHA-256: 6e6ae3bd63f17b7a84d32be7ea579755ba0a16566dd6134a95c2623afc69ac02

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