Malicious PDF — malware analysis report

Static analysis result for SHA-256 4258849a112ce0e5…

MALICIOUS

PDF

45.7 KB Created: 2021-05-10 18:36:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: b34ad889bceec1e414060312b11483fa SHA-1: b6c24328aa92e2c1f778d6d83706893eb0d777dd SHA-256: 4258849a112ce0e59ce595239a7f64c062441117d16921b48d4c9e482e71afc2
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/free-spins-on-coin-master-2021-ios-game-hack In PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA1 26792 bytes
SHA-256: 1e08757111397efb89057b9714f93b0c7ef574c72391acd80de7f41a826aa6e1
font_01_sfnt_off0000854c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854C 18288 bytes
SHA-256: 9fe1374c2a5f04ab05412f91fd2327b7ecdc71e8abb7b76c0a33ea1eb285afe1
font_02_sfnt_off0000a75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA75A 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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