Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46fc3cfcce5f799…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 08:55:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd298b382fd4e325fef82c2f52069026 SHA-1: 84f40293479fcdcf26e4d47e6a35f625ed610c1d SHA-256: c46fc3cfcce5f7999ef1b8b9d77ad90ab975013b65016dc311f309d10accbe1c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appears to be a "free generator / game hack". One of these links, https://netcdn.online/app/431946152/free-robux-live-game-hack, is identified as a known malicious redirector. The document body and embedded links suggest a phishing or scam attempt, likely to lead users to a site that may host further malware or attempt credential harvesting. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-robux-live-game-hack In PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-ultra-attack-hack_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_off00004ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EAD 24980 bytes
SHA-256: 668ecca3990bdd314f8fac03385066ac40c3d47faa5a5d1824c8114c8ecab599
font_01_sfnt_off0000863e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x863E 18248 bytes
SHA-256: 2e5a72f8344bcf9b425e9fd022f0a9c5c2029812f1a4b00ba9f2a8ee504eb572

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