Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4e8f21e52d7f57f…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 10:50:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7bca04b80aea3593a234ccce08c0ce2c SHA-1: c08dbdeba3c27f0cf72da0fc00737977d66e722f SHA-256: c4e8f21e52d7f57ff9298e853b76f8fa86409c23513f3930abb5f7e22ccc674e
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/431946152/how-to-report-hacking-on-roblox-game-hack PDF link annotation
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/roblox-hacks-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/free-robux-code-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/hack-tool-for-roblox-pc_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/free-robux-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/como-volar-en-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/este-hack-de-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/best-free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/robux-hack-2021-d_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/roblox-how-to-protect-your-free-model-from-being-copied_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/check-cashed-v3-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/powering-imagination-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/cheats-to-get-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/tiktok-free-like_GM835599320.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/fairy-world-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsusbbatam.com/__statics/gudangsoal/files/how-to-get-free-robux-fast-and-easy-2_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_off0000312c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312C 22920 bytes
SHA-256: c67fea4831d39fb0779cf45e97b26066f399a539d6f708ee3d7a48cab65697f5
font_01_sfnt_off0000648e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648E 19220 bytes
SHA-256: 280d27c6ea68ec71f12c7c9dccdd9c66557b96e50c429874d26c5c9c70a8571b

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