Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af7208b5567c9aa…

MALICIOUS

PDF

33.4 KB Created: 2021-06-20 12:33:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 31544577fd4b4c112ebe83a179de6eb8 SHA-1: 5fad7d8be554e438d786e919408459f96ce26083 SHA-256: 4af7208b5567c9aa951913559060738fcf6bfd666ef6617310ca5cca884bdde9
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/zombie-rush-roblox-hack-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-download_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/money-robux-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-free-demo_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-redeem-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/my-roblox-account-has-beem-hacked_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/pastebin-roblox-promocode-hack-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/bun-hub-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/cheat-roblox-unboxing-simulato_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hack-xbox-one_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/thanos-roblox-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/aim-hack-roblox-prison-royal_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-ultimate-driving-2-westover-islands-free-job_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-anarchy-server-no-hacks_GM479516143.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_off00002abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABE 22388 bytes
SHA-256: ca0ba2c5eda0077d60a6f0fbd0ce784ed27bde82cc81af481481e4f47c634344
font_01_sfnt_off00005cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 19436 bytes
SHA-256: 64281fa82058646581e8607b2e85b8f44c7242ae1ab30ec3749cc0e23c6461fd

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