Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b461058e0a08eb…

MALICIOUS

PDF

46.9 KB Created: 2021-05-13 23:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a23fe3b238379ac460abb2ba07d9e807 SHA-1: f9d45c942288dd45caa0576b2a37727567fa2f96 SHA-256: 89b461058e0a08eb2bb44f0a774cde1778321ee89f87002ec33275528e36fb7e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and generators, such as 'how-to-make-my-own-coin-master-cards-hack-game-hack'. These links likely redirect to malicious websites or initiate downloads of further malware. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/how-to-make-my-own-coin-master-cards-hack-game-hack PDF link annotation
    • http://nebraskahospitalityhalloffame.com/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-do-you-get-free-robux-without-paying_GM431946152.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
stream_003_off00004d8a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D8A 25652 bytes
SHA-256: ce2ccf1922aa13bff945badeb0b8c3f832845c354ca3b7927668d88db67c5d8b
font_01_sfnt_off0000877e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877E 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off00009506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9506 18232 bytes
SHA-256: 5f1949bcf536834432a639d31c768e6b089f6f06eac6180dd684d59a3237e231

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