Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3f27a026d9ed06…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 16:13:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 18f2c6f088649e341d4e148af0c0c52d SHA-1: dbad234e4b471ec17e115b8162a2fba95d78fb0c SHA-256: 8a3f27a026d9ed06a5a3d3cb1f5544ade3ec323291e2cf4c5b1c2567a7ffb55f
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that lure users with promises of game hacks and cheats for popular games like Roblox. The primary URL, http://netcdn.tw/app/431946152/roblox-hack-download-pc-game-hack, is identified as a high-risk finding, suggesting it leads to a malicious download. The document's content and heuristics strongly indicate a social engineering tactic to trick users into downloading potentially harmful files.

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/roblox-hack-download-pc-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/roblox-counter-blox-esp-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-a-roblox-account-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-u-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hacking-lua-c-script_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-robux-robloxcom_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-shirt-creator-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-4-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-in-roblox-2021-ios_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/what-game-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hacks-dll-downloads_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/best-free-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-jailbreak-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/new-dtfb-test-server-roblox-hack_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_off0000319a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319A 22480 bytes
SHA-256: 5a179b0d99663ac026dff43951b0c986f4b2f51029b2578badea0c9537a1e844
font_01_sfnt_off000063cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CC 19316 bytes
SHA-256: f7e1569b35dd9ea38dfb046f4486bccf47f5ffb509dcfc8bcbaa088fb7facdac

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