Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f4cf4fd30882d0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-23 02:22:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5f12ee1e82aa65d840daf3ed9bbf28ca SHA-1: 7b4af6d90d142f557d72360e7b25abd5c1588f3a SHA-256: f1f4cf4fd30882d0fb6164f27520dcb2d7954bc7edb54d8358a9152f11881da9
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.co/app/406889139/how-to-get-free-spins-coin-master-game-hack PDF link annotation
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/tiktok-free-likes-and-followers-apk-download_GM835599320.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://www.albrighteducationcentre.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-human-verification_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_off00003375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3375 22568 bytes
SHA-256: 3b249e65cb3e403952bbffb0e713624182d20b16f3ba9c697c6e18794238ce72
font_01_sfnt_off000065bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BF 18336 bytes
SHA-256: 23f71a9ba4d854b783c042dde3b810d75211435ebb04f16eb6963276a01a3aa2

Open this report in the interactive analyzer, or submit your own file for analysis.