Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6ea3ab4d9872e1…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 16:51:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 223ed282537f07f61d0d840ac209a60c SHA-1: 8dd157423f343b8753d9d90acc292d6e2dffd078 SHA-256: ec6ea3ab4d9872e171acb1dd0c39ab58fc8d1fa3c85d81c491d3adffb8aaa729
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/hack-coin-master-free-game-hack PDF link annotation
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/roblox-verification_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/free-bedrock-minecraft_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_off0000308e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308E 23056 bytes
SHA-256: d48bd8499e547debcf536dcf87c096bfc522b782d848640ac14d2a461bc76563
font_01_sfnt_off0000649c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649C 18168 bytes
SHA-256: be72a1914a99b846651b156c672e0768d1f742f579973333786d0ab12deac364

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