Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf7ce297206f688…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 17:26:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 15c86459568fc41abe94458d5614e686 SHA-1: 281f4671b0a7c2b2ac313cb846987807907c3b7e SHA-256: 2bf7ce297206f688f70015e607166af9b946cc69750a7ad56e424c2e5ffafcde
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing 'free Roblox followers generator' and 'game hack', indicating a lure for users interested in cheating or obtaining in-game currency. The primary URL, http://netcdn.tw/app/431946152/free-roblox-followers-generator-2021-game-hack, is likely a landing page for a scam or a download of malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/free-roblox-followers-generator-2021-game-hack PDF link annotation
    • http://library.ft.upnvj.ac.id/repository/roblox-run-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-how-to-be-a-nerd-no-robux-or-hacks_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-help-com_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-no-zip_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-roblox-cards-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-hacked-client-esp_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/dll-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-hack-mad-paintball-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/arts-78-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/give-free-account-roblox-13jun-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/hack-roblox-exploiting_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-creepily-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/money-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-tiktok-that-you-dont-have-to-download_GM835599320.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_off00003254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3254 22068 bytes
SHA-256: 259149cdaacd376a5246f21586eb08e6066bb68c89f5ebdac6d0afed5a82fb9a
font_01_sfnt_off0000630a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630A 19320 bytes
SHA-256: 596a923784bfe79cbb538eb6264a58472b034a0b8c68b8708d14b0a77177cb7e

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