Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f28778f985f47b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 15:12:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b229a27f0bf34dc76bc82e3ef819678d SHA-1: da42444df5ccfd4cef38d65a0f964226f5c94244 SHA-256: 65f28778f985f47b8f36339b41b47cd176e022b2414e9504109764911a1cfaf9
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.tw/app/406889139/link-for-free-spins-on-coin-master-game-hack PDF link annotation
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-interceptor-hack_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-pajamas-free-shipping_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-hack-accounts-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-hack-jojos-bizarre-side-project-roblox_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-hack-roblox-apocalypse-rising-console_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/hack-como-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-roblox-custom-templates_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/robux-claimer_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/roblox-welcome-to-bloxburg-money-hack-lua_GM431946152.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.producthubhob.com/uploaded_files/userfiles/files/how-to-exploit-with-cheat-engine-in-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_off000031da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DA 22596 bytes
SHA-256: 95857820b9746e3f8d726a50fc09565f0bb605ad7d613be813f10d64fc30f2d3
font_01_sfnt_off0000646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 18344 bytes
SHA-256: f56b0ea85f0f4ceaa4b3226630b5e27c33b435ed9466ab3582cda34df5208c0a