Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da995ddc7791506…

MALICIOUS

PDF

32.7 KB Created: 2021-07-06 12:14:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 77a9f4cc32f9a6bdcbc4c5b2c1be2bca SHA-1: 8a474d62e85b63a0104e0645bc45d25e6aa4ef77 SHA-256: 7da995ddc779150602eebf9f8466e4f53d778748ea83926f95fb3874dbbadebd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a lure, using the promise of game hacks for titles like Roblox and Coin Master to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/431946152/roblox-arsenal-hacks-download-game-hack, likely leads to a payload download or further malicious content. The presence of a visual download button heuristic further supports the deceptive nature of the document.

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/431946152/roblox-arsenal-hacks-download-game-hack PDF link annotation
    • http://library.ft.upnvj.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/wurst-commands_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/cheats-in-wolves-life-3-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/html-free-robux-30-pastebin-com_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/win-robux-free_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-stuff-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/sop-free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/cheat-boku-no-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/sword-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/comment-hack-sur-roblox-admin-commands_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-mad-city-money-cheat_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_off00002c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C14 21208 bytes
SHA-256: fba1d7b036cd192aa7421645a5ce6d1194118f2f5851ed6dc83875f2a9be055c
font_01_sfnt_off00005a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A37 19160 bytes
SHA-256: ef8046cb7e5b512633bb2a2b8d0b9305cb8b2ace19eb6481252999b35d1cc959

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