Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec066bc5210c694…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 17:21:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 72ba460ab906122b421757360618b473 SHA-1: 1603904b992dd362a4d6d942849f61f2338f9f90 SHA-256: 8ec066bc5210c694c9dab4e62cfedc2830a95c11f78b7a52bbec612a7f51b165
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/free-robux-kid-friendly-no-human-verification-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/lemonaid-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-robux-genorator-2021-no-suvery_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/redline-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-infinite-health-hack-phantom-forces_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-vip-gta-5_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-roblox-accounts-in-game_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-robux-infinitos-en-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/promo-codes-for-free-stuff-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-into-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/walk-through-walls-roblox-hack_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_off0000306b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306B 22012 bytes
SHA-256: 242037590dcead1274e57065cca5a8c0898e64a1f3a353e22264bc906a66ae2f
font_01_sfnt_off000060f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F7 19760 bytes
SHA-256: 81aab0412cfb0a87b1895216bf4af503bb533c0e0c6228ebd3d86b300273636c

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