Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8eb666153e2a09b…

MALICIOUS

PDF

36.6 KB Created: 2021-07-06 17:54:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9bf49f09c006c3a57b8ddeb541a72038 SHA-1: 1535fba4e327ad2a45898806453acb673d9979ca SHA-256: b8eb666153e2a09b13bbfa4c60ba846b386b6e0178b3950a951b5c09a80ffcd2
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/406889139/coin-master-hack-without-downloading-apps-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-sand-simulator-hack-android-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-most-hacked-games_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/autoclick-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-person_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-one-piece-pirates-wrath-hack_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/hack-roblox-rose_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-hacked-client-112-2_GM479516143.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_off000036e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36E2 22632 bytes
SHA-256: 57bc1371544f1940998b07418aa08fb3fa8a9a52a3ad1fb091d9600b47a3b92c
font_01_sfnt_off0000699d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x699D 19264 bytes
SHA-256: 107d0b2f5720c59605693405bc5e5e12dddb779c904aed798fb77a039a66e8b0

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