Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb97db3d4fea1d83…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 01:55:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a63e6c6ebe7947395d655242fd6925c3 SHA-1: 38ce870e6b9b1fccd5cec65e2f8017ed3200ef16 SHA-256: eb97db3d4fea1d837022a55be1d0412d49c48821b5365d607033477adb3a5fb2
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/479516143/minecraft-build-hacks-game-hack PDF link annotation
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/roblox-rape_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/codigo-oculto-roblox-hack-roblox-tener-robux-gratis-2021-noviembre_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/give-me-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-without-getting-banned_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/free-robux-easy-and-fast-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://elearning.mtsmatholiulhudabugel.com/__statics/gudangsoal/files/can-you-make-a-minecraft-server-for-free_GM479516143.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_off00003466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3466 21932 bytes
SHA-256: 7805f1f67d4a7ed70ece2e2b99f587d41ce3e7d3495303eb67cf33913fa29cab
font_01_sfnt_off00006493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6493 18628 bytes
SHA-256: a4fd7a8a6c31dcfbd5d524261ca24fbd66144d88575524e109ec8b87e7a5b6d6

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