Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b27a7b36bb08c89…

MALICIOUS

PDF

35.2 KB Created: 2021-07-09 08:14:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 50f0be072f1b26150e9df8e8cf13c5fd SHA-1: 4fa0d56bae5001f06e3dbbe7501f46f3b1e64286 SHA-256: 4b27a7b36bb08c89429d6346cb06347ebfd42c36dc432dd82481a30d84de9db5
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/master-coin-hack-game-game-hack PDF link annotation
    • https://www.iseas.com/uploaded_files/userfiles/files/roblox-adopt-me-money-hack-2021-script_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/c00lkidds-roblox-hack-client-rc7_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-roblox-autofram_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-cheat-on-eviction-notice-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/hacking-coolrichytimemax-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/developer-tools-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/free-100-robux_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3483 22672 bytes
SHA-256: 83ebbb54b3321683855805a6c969a7498a3f60b5b3ab17b3d67b9b45ccd9b506
font_01_sfnt_off00006731.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6731 18264 bytes
SHA-256: 4a5fae70639e3f7ad74a8b5463b1206e0a2e0224746e08acf5f0c1dacc4d336e

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