Malicious PDF — malware analysis report

Static analysis result for SHA-256 5262ad67e919e94d…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 23:16:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ab09457fb02e029e4e1fd9cd3d2be9bd SHA-1: 13e9b77a06510e44253ab416d86647d867d127da SHA-256: 5262ad67e919e94d7396362f89afbcd4fffbc259340c93fb7d4d7cacf748d978
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.co/app/431946152/roblox-acount-info-hack-with-robux-game-hack PDF link annotation
    • http://elibrary.fl.unud.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/robux-hack-joining-groups-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/very-easy-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-chrome-extension_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/mathep_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/cheat-engine-not-working-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-free-prizes_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/www-roblox-play-for-free_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-10-dollar-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-no-offers-no-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/best-free-roblox-stuff_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-hack-app-2021_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_off0000314e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314E 22080 bytes
SHA-256: 0ebbfd84b42a74daff567e7c137d14ed021d48b2a6f159efaaee42e9211d0bea
font_01_sfnt_off00006233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 19384 bytes
SHA-256: cf98381265fec47b0e076f5767f5af5c5a8ad0a9b710dd289afad1f610059de2

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