Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ab56874329a3e0…

MALICIOUS

PDF

48.6 KB Created: 2021-06-04 02:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9633b45fd871a67e1b1abd5b15fc8526 SHA-1: 551a8c644e0ccd4a4da0a4363ec0de39230371e5 SHA-256: f6ab56874329a3e04137a0037b2d10fedef10664dea7cbed4cb2a203fe4f690d
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 0.9796

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 https://netcdn.online/app/431946152/free-robux-generator-no-human-verification-2021-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/pubg-uc-shop-pakistan_GM1330123889.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/tiktok-free-install_GM835599320.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-cheat_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5552 25304 bytes
SHA-256: 03aa390f41e8c4cb924bfb158605cc440a6ca08b7a94f3e4664652c70477b1a5
font_01_sfnt_off00008e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E35 2972 bytes
SHA-256: 5a3edb2849e5faf8ec45529779f334c3d666a6822264c58700cb1a973ab38c1e
font_02_sfnt_off00009873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9873 19260 bytes
SHA-256: cfeb00e99c7da41c79bd6814c2de1bf58f441159bdfe452787b9448ffd27beb4

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