Malicious PDF — malware analysis report

Static analysis result for SHA-256 90ff0189d9ee7451…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 02:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a9420ee8d3460a219b40ad1b02775f7f SHA-1: 30b222c7af643bcacca811556f6ecb29879820e1 SHA-256: 90ff0189d9ee7451f2bd14783418a7ed6d69a6ca760bc0f5692f28f263adabd3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a lure related to obtaining free items for the game Roblox, directing users to a URL that is flagged as a game hack redirector. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or phishing pages.

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/how-to-get-animation-packs-for-free-on-roblox-game-hack PDF link annotation
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-mod-apk-free-robux_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-hack-free-unlimited-robux-and-tickets_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/get-free-robux-on-a-server-roblox_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/free-robux-codes-on-tablet-2021_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-dayz-cheat-codes_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/id-roblox-dress-free_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/how-do-hack-your-money-on-roblox-ultimate-driving_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-gift-card-free-no-human-very-or-survey-youtube_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/how-to-get-free-robux-with-roblox-gift-word-press_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/jojo-free-robux_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/all-free-roblox-catalog-items_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/hacks-para-roblox-booga-booga-2021_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/codigo-oculto-roblox-hack-roblox-tener-robux-gratis-2021-noviembre_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-free-dance-animations_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/roblox-eploite-for-free-download_GM431946152.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://scit-tech.ro/wp-content/uploads/fsqm-files/theme-park-tycoon-cheat-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_off00003146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3146 21988 bytes
SHA-256: 3ab338fe3b56b438d22f1411f629f8dd591063242fb23e1a2925c4ac64da2388
font_01_sfnt_off000061ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 19624 bytes
SHA-256: fae1c36fd523fce0fa787c206a32ade8bc65e0dbf6fc49218e57937651b71ecd