Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf68f3422304e907…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 17:32:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b6493e4b0edea1de4ff1d62df80f53a SHA-1: 56f4e4c1de195c535deee22066eb10d37f82063f SHA-256: cf68f3422304e907b0c72d0e6daff7fe22387575ef6f7a5aa0ff1527d1068c11
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users to websites offering game hacks and cheats. The primary link, http://netcdn.co/app/431946152/cheats-for-royale-high-school-on-roblox-game-hack, is associated with a game hack lure and redirects to known malicious infrastructure. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

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/cheats-for-royale-high-school-on-roblox-game-hack In PDF document text
    • http://opac.stieimalang.ac.id/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-no-human-verification-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-rush_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/robux-hacks-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/moon-active-games_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coinmaster-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_off00002fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE5 22268 bytes
SHA-256: 7b2024a16d6030013b03f2a6d1666932e878be30f6f73ea3301cd7ec840d3243
font_01_sfnt_off00006166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 19220 bytes
SHA-256: ca20b17931c22c1e30e7be84dfb6ba6d21532ea6db6d21870fd00e9ff4e53e16

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