Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c60f21d649e0697…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 23:33:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 129510ae3efc4f1d98fe043f80bc7591 SHA-1: 6243cc3828cfb4fe54a84d4aa46b50db40aaa560 SHA-256: 4c60f21d649e0697ef2f4327ee388b5615826a8c034e3f35c399bd5c537a6e59
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free game hacks' and redirects to a URL that likely hosts malicious content. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into downloading or navigating to a harmful resource.

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/roblox-script-executor-free-game-hack PDF link annotation
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-ad-maker-free_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/como-ganar-robux-hack_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/como-ser-hacker-sin-descargar-nada-en-roblox_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-no-human-verification-2021-or-survey-ios_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://bbalitvet.litbang.pertanian.go.id/library/repository/como-hackear-roblox-sin-descargas_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/como-tener-ropa-gratis-en-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/hacks-for-roblox-pc_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://bbalitvet.litbang.pertanian.go.id/library/repository/free-robux-for-everyone_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_off000032aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32AA 22400 bytes
SHA-256: b7f346c71add34f6df348fd12d8f9859f8a6a698d902c8d4420946267104841c
font_01_sfnt_off000064a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 19192 bytes
SHA-256: d66373ea5ab1b8b466fc6e6258f526b91ee4d86cf629368fdc40183b9a98196c