Malicious PDF — malware analysis report

Static analysis result for SHA-256 e926a283f7f594df…

MALICIOUS

PDF

35.7 KB Created: 2021-06-20 09:01:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 24dfb206af025aa9e65774343958eced SHA-1: 253d90fde3181d59e3a5e9ba22aaac1677f2c864 SHA-256: e926a283f7f594df02e3fdb13f7d649dbd1c22eda97e03dd2f37c26fefa1ab81
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game items and hacks to entice users. It contains multiple embedded URLs, including http://netcdn.co/app/431946152/free-ninja-legends-groups-roblox-game-hack, which likely lead to malicious websites or further download stages. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and redirection behavior.

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/free-ninja-legends-groups-roblox-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id/repository/free-robux-web-site_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/como-descargarse-hacks-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-the-guest-boby-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/www-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-cookies-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-accounts-with-robux-2021-september_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_off00003250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3250 22736 bytes
SHA-256: 0d28523a08d5a113f7f36136d99a1d8fa40dcb96a4158543bb35fa184c744855
font_01_sfnt_off0000656e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656E 19448 bytes
SHA-256: 83cc0980c161075cb646969388980f58b35c57bcddac209a259b2716fde0f3ee

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