Malicious PDF — malware analysis report

Static analysis result for SHA-256 168a3301e153bbb5…

MALICIOUS

PDF

35.0 KB Created: 2021-07-02 00:52:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c329293255ebbb6592fd00bce88e716c SHA-1: f8b2f8bc2517ed8210610fdea8f4065bde4475f0 SHA-256: 168a3301e153bbb5a57289e24cf1ffff115c1217ef57911f549b8055da4272ab
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/roblox-noclip-hack-jailbreak-outwit-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/www-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-use-cheat-engine-64-on-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/best-hack-for-dragon-ball-z-rage-on-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/case-clicker-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-free-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-hack-robux-items-for-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-hack-aimbot-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-outrageous-and-robux-earrape_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-no-offers-no-human-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-android_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_off00003013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3013 22436 bytes
SHA-256: cf659f4b64f7c90943c050f3e1ff2065c1769faa16ad8d3e7a9493c40ce6872a
font_01_sfnt_off00006255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6255 19528 bytes
SHA-256: d07d220ce511bc5910cbcd8a1e994b2051f0caeef5176a2744ea7f1a48004ea4