Malicious PDF — malware analysis report

Static analysis result for SHA-256 9288b47b1e22041a…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 20:34:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 3dc10382ffb4986ec0a6951d480a1948 SHA-1: bbfdef3bbfcd885f07a5af418066438ab8740cd9 SHA-256: 9288b47b1e22041adec66abb3c89adcbac2592949ed28adee0711bee48587634
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a malicious redirector, masquerading as a generator for game hacks and cheats. The primary lure is the promise of 'free robux' or 'game hacks', which is a common social engineering tactic. The document's content and embedded URLs strongly suggest it is part of a phishing or scam campaign designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-noclip-in-roblox-with-cheat-engline-game-hack In PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/caught-my-girlfriend-cheating-on-me-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hacks-injector-roblox-laxify_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-money-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-roblox-with-an-injector_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/20210-robux-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/xbox-roblox-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-fashion-frenzy-free-games_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-tiktok-fans_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_off000032b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B3 22188 bytes
SHA-256: bdbf442539c330fd35b2a6cf68882b79dc3c5a725973e97dc854df14d0dfcb8b
font_01_sfnt_off000063f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F5 19412 bytes
SHA-256: 5cf14f3737815c617d5dc173b6d8d94cbedc52dc64b910e9f5260be39ca1863c

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