Malicious PDF — malware analysis report

Static analysis result for SHA-256 68d933a63e94a2e3…

MALICIOUS

PDF

51.5 KB Created: 2021-06-03 14:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e3b991afd46c2d9b4ee871dcc607f86e SHA-1: 25cda907ab6f326b8ea38b900836415666d9de29 SHA-256: 68d933a63e94a2e39c48392d9c81865b2c49112a1127f6c13f08e9fec632b681
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free currency. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to potentially harmful websites through deceptive content, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9327

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 https://netcdn.online/app/431946152/20210-robux-game-hack In PDF document text
    • http://librarystkippgribl.com/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/bloxy-awards-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005088.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5088 25524 bytes
SHA-256: eed77a55a2007e50f683878645459994ae480c29f9c1350aad3ceda826414fd3
font_01_sfnt_off00008bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEE 8132 bytes
SHA-256: 7b13f62dd83f6e5b39d850f66139f44fff841e4e695f86fdfbe4d5a2de470bf2
font_02_sfnt_off0000a6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6DE 18252 bytes
SHA-256: c6c6b837e22de3676a2ba596b9db5dc5a1db3890ceafc7e2998a39c6caf756de

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