Malicious PDF — malware analysis report

Static analysis result for SHA-256 4936f345e8c63a5d…

MALICIOUS

PDF

34.2 KB Created: 2021-06-20 03:36:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 59034555ff9206ef3f309e07a348a97a SHA-1: d9e66e49bb60cd0654e5cf148cb97c86df2f9426 SHA-256: 4936f345e8c63a5dd13873096b75821c3d59d090bf36010fbcb3238def386aa4
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/roblox-hack-to-get-on-accont-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hacks-pc-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-conquerors-3-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-download-android_GM406889139.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_off00002f86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F86 22328 bytes
SHA-256: 65cc93106aba44e8a63313180d27550a452bc3d1790623cf2fc70a32ca9febeb
font_01_sfnt_off0000613b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 18760 bytes
SHA-256: 05b9cc67f6d3de4b094a29fb84e728b1d6efaa18000859a31a992e8c54e10f1a