Malicious PDF — malware analysis report

Static analysis result for SHA-256 99914bf24ce92662…

MALICIOUS

PDF

35.4 KB Created: 2021-06-20 11:13:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab91e7c2ae38eab4559b6fc348c1992f SHA-1: c801b38972a406d14333bb808f50a19a8b5aac87 SHA-256: 99914bf24ce926626f6c3a27db23ac0326f185c3146af11e51fd665901a4d64b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising 'free generator / game hack' content. The ML classifier strongly flagged this PDF as malicious, and the presence of a visual download button lure further supports a malicious intent. The primary IOC is the redirector URL, which likely serves as a gateway to further malicious content or phishing pages.

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.co/app/431946152/roblox-free-accessories-game-hack In PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-deals_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/what-would-noobs-do-with-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-speed-hacks-free_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3432 22488 bytes
SHA-256: 63a9af21e66ce19686d136e41b1172325fdf7b7150f8699f9e063473985f9da2
font_01_sfnt_off00006663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6663 18768 bytes
SHA-256: 43a1c2d0afcd82e775e61e55c2e0c8a016c3844b087109c53c024c689feb06a9

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