Malicious PDF — malware analysis report

Static analysis result for SHA-256 d24df4eb8b9f5549…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 06:46:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 50d24f235b09b5ffa13e8ffea0cca598 SHA-1: a3b02ab671d00037406dc7a181e265cdbb93cdbd SHA-256: d24df4eb8b9f55496d56ecb3e22bf3ca79e50adfafef11e1bb9dbfe22408b968
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for 'Free Robux' and game hacks, directing users to a suspicious URL. This indicates a phishing or scam attempt designed to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-robux-com-2021-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-card-free-codes_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/cheat-engine-cheat-table-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-bloxburg-free-home_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-dungeon-quest-free-upgrades_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-bloxburg-vehicle-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-vip-login_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/pastebin-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/download-free-cool-roblox-boy-outfits_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-free-model-teleporting-to-st0p-l00kin-4-siskox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-how-to-get-free-gamepasses-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/tc3-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-legally_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/abd-roblox_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_off00002ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB1 22936 bytes
SHA-256: 5fd196db36a613009c14b874e671e880d5084c215775ffd1588a3b8721bb3177
font_01_sfnt_off00005e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2E 19380 bytes
SHA-256: e4a3050f3e501d111e2505792e6fe17b213487e8f387ded0c09bd9d126917491

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