Malicious PDF — malware analysis report

Static analysis result for SHA-256 3698417bc24c7b29…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 01:10:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c7081ef025e359a97e41007a7680766e SHA-1: f9c2d1dcd1341f9f9e8037282793abe6c1e74cf2 SHA-256: 3698417bc24c7b29277f37ff4ee9bbad299d514df5ba7e689ba87ad134ed15c9
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/479516143/minecraft-pe-hack-client-2021-game-hack PDF link annotation
    • https://pustaka.mic.sch.id//repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-hack-2021-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-bc-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-roblox-cards-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-android_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-free-stuff-on-roblox-catalog_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-nijna-legends-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/best-roblox-hack-ever_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/hack-apk-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-free-candy-decal_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-snow-shoveling-simulator-cheats_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_off00003182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3182 23492 bytes
SHA-256: 7b04f636855b9d4ca3fd01d9f2c063a75d6159ddcc7a9c5726c32a1eea720cb3
font_01_sfnt_off00006593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6593 18656 bytes
SHA-256: 53a466fcec1ed108604f3dbbe8640b7ffb37a97853351eb47936b7df07e96494

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