Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d761af7e9a1abd…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 06:50:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d463e57a52f6c14b457598da8b9dfb2b SHA-1: d826ca0d62305453ec08abe92d5a5810bf4ba7b5 SHA-256: 46d761af7e9a1abdea39f7757b756f2b4a799528d72ed18a5f82e1d265dbb07b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or free account generators. The primary lure URL is https://netcdn.online/app/431946152/free-accounts-with-space-names-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector chain designed to lead users to potentially harmful content.

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/431946152/free-accounts-with-space-names-roblox-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/worst-client_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/is-tiktok-free-to-download-on-iphone_GM835599320.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-websites-no-human-verification_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_off0000542f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x542F 27316 bytes
SHA-256: 0d630292599c179b5c0d53d5bfb19842ac585ddb45cda6647d1955ba9bb8cc01
font_01_sfnt_off000091d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D0 19340 bytes
SHA-256: 68c0055f844dbd5181ddc4016a4678bb663a993aa46bfab7d321691bf2105900

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