Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19623512b463a81…

MALICIOUS

PDF

46.4 KB Created: 2021-06-04 00:54:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6d05b8a58d9f932077688b079317881c SHA-1: c3534dffcf89bfeff4b474001cc3bce73b6c8fe5 SHA-256: e19623512b463a81a807898c7b230cee4c659439d7430dce19883ac44892b75d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure is a link to 'how-to-download-minecraft-windows-10-edition-for-free-game-hack', which is a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick the user into downloading a secondary payload or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/479516143/how-to-download-minecraft-windows-10-edition-for-free-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-youtube-tiktok-dance_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/blox-rewards_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn 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_off0000579c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x579C 26200 bytes
SHA-256: 5bce352eea508ea8659dfc94b35ec6301d3b5e242668a7f01468fe272dea7d86
font_01_sfnt_off00009189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9189 18764 bytes
SHA-256: 21f431781c44949058772af5dafb642530c243ab7b82586e83b465fe58a13039

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