Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5f6f40b096a6a6…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 08:00:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4cf5c45f74355fe031f10387b9dfde0f SHA-1: 290b7753f39063691e3b421a7f86df2e5a703a93 SHA-256: 7c5f6f40b096a6a63269f8d59b89501bc533f8c1a4a0e8a69ecb9954626579de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on a URL that promises free game items or hacks. The primary link, http://netcdn.tw/app/431946152/free-golden-suit-roblox-game-hack, is identified as a malicious redirector. The document's content 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.

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.tw/app/431946152/free-golden-suit-roblox-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-unblocked-free-no-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/all-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/como-evitar-ser-hackeado-en-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-auto-clicker-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-you-get-free-robux-code_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-admin-no-download-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-song-id-billie-elish-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-a-bizarre-day-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-execute-script-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/get-10-robux-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/www-free-robux-win_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accounts-with-robux-and-builders-club_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-free-link_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_off00002fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB4 21920 bytes
SHA-256: d3a1687c6cc537c45445ad60aea42214e0b4d510d13513cfc124afce62cfed72
font_01_sfnt_off00006024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6024 19188 bytes
SHA-256: 9693db483dd1f9f067fab28ca721933c9dc581b5fd39a73a0c3b4bc4e2687add

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