Malicious PDF — malware analysis report

Static analysis result for SHA-256 968ec5f4af0a9294…

MALICIOUS

PDF

42.4 KB Created: 2021-05-10 23:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 51f56d7749cf96117c235557b4d1cf77 SHA-1: 67cd913c5cb8a9999fd843f92349c8d524759c7b SHA-256: 968ec5f4af0a92944e167b5c8e1f5aa2875ab493b6bb2866aa11fddc31f8d2ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector infrastructure, disguised as game hacks and generators. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-spin-link-today-16-11-2021-game-hack, which is designed to trick users into clicking through to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-spin-link-today-16-11-2021-game-hack In PDF document text
    • http://www.perpusffup.or.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/client-minecraft_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-spins-and-coins-coin-master_GM406889139.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_off000047e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47E9 24800 bytes
SHA-256: e71c9a1b4ae76919e67f024ec17f0cb1658a01529733fd1b9df2785ee7cf1db0
font_01_sfnt_off00008133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8133 18980 bytes
SHA-256: e4d439b3b5f6932fbef0b3c3f4e884e2be76520c2aafdd6e5f347e1a4fd448d8

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