Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a3dc133d6f118e…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 22:24:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ceb853e5e1b01624c28178e3c0285d3b SHA-1: 63e0b28cd41eef501b035371a08e7f778e596d86 SHA-256: 75a3dc133d6f118e0711d52bae249780044f4e2f5e63d3602973522956f792ea
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/how-to-hack-into-a-roblox-account-2021-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id//repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-weight-champion-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-free-bc-tbc-obc-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/gaming-cheats-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-boy-hair-not-model_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/indieun-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-free-admin-powers-game_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/pokemon-go-free-007_GM1094591345.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-under-fighters-2-hacked-apk_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-story-mode-free_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_off00002e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E65 22072 bytes
SHA-256: 6e9023f2f5facb1de6e31005176c56bce5813bdc646c71b5ff802e1e21a7b5f1
font_01_sfnt_off00005f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6E 19468 bytes
SHA-256: 8e56887f387e51e75f1b496d6723f798f2bbec39248edacb7e6ee26b05819832

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