Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf0eee0988c0def…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 16:12:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 29107e6d11ff2baa0539cecc5dcc13c9 SHA-1: c94c5c160da0dc56f79e8fa44fdf0c631fbff80e SHA-256: abf0eee0988c0def6785cf5a66319cc2e04fd5b17db1f05dce8bf79e1f2f750f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA prompt and a call-to-action button, designed to lure users into clicking a link for game hacks. The primary link, https://netcdn.online/app/431946152/how-do-u-get-free-robux-game-hack, is associated with a high-severity heuristic for game hack redirects. This suggests the document's purpose is to facilitate the download of malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.online/app/431946152/how-do-u-get-free-robux-game-hack PDF link annotation
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/how-to-become-pubg-uc-seller_GM1330123889.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn.co.uk/uploads/files/files/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://rblx.landIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005148.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5148 26136 bytes
SHA-256: a9636d9571c97a56ffeea8fc740820b04f8d50aaa0398e927f84a6b85ba8faa2
font_01_sfnt_off00008cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC7 18636 bytes
SHA-256: ab6f51fdb1eed883fd21dff3bd0336e3a1b816e6c21a8924207bfe84ed9a007e

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