Malicious PDF — malware analysis report

Static analysis result for SHA-256 729d510201ed328a…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 10:56:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 558d626cd4ec2eecc03eccf1da485815 SHA-1: 56456a888e7df4249bfacf9b6cfbf092ff59065b SHA-256: 729d510201ed328a43f0fc92fba455afc4bfd4d28bed79f36c9155e27d06cc2a
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.tw/app/431946152/free-robux-kid-friendly-no-human-verification-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-in-a-roblox-game_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-make-t-shirts-on-roblox-free-sell_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-cheat-comands_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-youtube-tiktok-dance_GM835599320.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/get-free-robux-offers_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/price-of-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/pubg-uc-full-form_GM1330123889.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-thru-premium-houses-in-roblox-pacifico_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/hack-for-roblox-super-power-training-simulator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/hack-para-simulador-de-levantamento-de-peso-3-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_off00003190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3190 22696 bytes
SHA-256: 65943d98fb156bb22e84e8d2e7c6bcdc5041f16c7965082021f9eca1c50e3d91
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 19760 bytes
SHA-256: 81aab0412cfb0a87b1895216bf4af503bb533c0e0c6228ebd3d86b300273636c

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