Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89265d59616cf2c…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 18:22:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fb17da08d88e4088321f9bfc223fb1d4 SHA-1: 062da39344c0dfc53f3762acef3d5195aeef2421 SHA-256: f89265d59616cf2c9dbd0181cda5fa065010df328488442383f58cdb5b7b1e6e
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/hacks-para-roblox-descargar-2021-game-hack PDF link annotation
    • https://elibrary.sttar.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-hacking-vpn_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/roblox-jailbreak-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • https://elibrary.sttar.ac.id/repository/who-hacked-cuteluccy9-on-roblox_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_off00002f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3A 21400 bytes
SHA-256: 259ca30bcf1c30a0976487c5ebae83627597b4aff091142fc6f86d7f34c0773f
font_01_sfnt_off00005dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD5 19380 bytes
SHA-256: d1449007a29f6bc4640f20f60fe7e976da6299373b704ff7077998d91f284708

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