Malicious PDF — malware analysis report

Static analysis result for SHA-256 2384d5e4f0ce3fe8…

MALICIOUS

PDF

46.7 KB Created: 2021-06-04 02:47:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d4551c66f648d6c630e86d396bd3b079 SHA-1: b2383ce5df19f308b3d808deb0ef08e5330eb3e5 SHA-256: 2384d5e4f0ce3fe83ec3cd7494aced8e95cc331157d1187dc921d4c38e2b98cd
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 0.9748

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 https://netcdn.online/app/406889139/static-moonactive-net-rewards-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/black-free-tshirt-template-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-a-free-pokemon-go-account_GM1094591345.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-person_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5113 25132 bytes
SHA-256: 5c491494a8e0f4f296dacd3901a5b559b453d54a73d70258d25bda65df3250a1
font_01_sfnt_off00008ad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD3 2824 bytes
SHA-256: a0d6c1ef1f7405ab05245801e4abbc2877925f97898db53811df9ab010e978fa
font_02_sfnt_off00009471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9471 18000 bytes
SHA-256: 9966684b9b98ae9c159578c69a57ea9c5c22f2a0e556d50b45713339f77195c2

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