Malicious PDF — malware analysis report

Static analysis result for SHA-256 748cafbb25118c85…

MALICIOUS

PDF

38.7 KB Created: 2021-05-20 23:14:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 672ce9245f0047adf3f21a88e0e715be SHA-1: f301025de64d756f29a7b25cc59d8c9fb43a18d5 SHA-256: 748cafbb25118c85c9b3330d149d12d6b4d55dde638ad8132abe7090ac46c5cb
122 Risk Score

Malware Insights

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

The PDF document contains a lure for a "Roblox Got Talent Piano Hack" and presents a fake CAPTCHA to trick the user into clicking a malicious link. This link, https://netcdn.xyz/app/431946152/roblox-got-talent-piano-hack-game-hack, is designed to lead the user to a potentially harmful resource. The document also contains multiple other embedded URLs pointing to similar game-related cheat pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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.xyz/app/431946152/roblox-got-talent-piano-hack-game-hack PDF link annotation
    • http://dndprinting.com/new/public/ckfinder/userfiles/files/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://dndprinting.com/new/public/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dndprinting.com/new/public/ckfinder/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://dndprinting.com/new/public/ckfinder/userfiles/files/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://dndprinting.com/new/public/ckfinder/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000359b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x359B 23780 bytes
SHA-256: 492b50b007f611b8e33cdc06aba52b5e00a2113868c78367a151df014874a07c
font_01_sfnt_off00006b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000074c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C1 18560 bytes
SHA-256: 718cc2b062ab6cfaeb2a411bf3639d4ddcb64813a44b35fc4dc4c297fc3c3153

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