Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c2e163f5ca8a5d…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 12:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 228af6d3c504493d9b8b0a06fc36d86c SHA-1: 8894317f84721783875bf3be7c0ee69d861ff895 SHA-256: 83c2e163f5ca8a5d2852d10caea52ce074829f1d888dd6adefcecc622d3f6408
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on 'free generator / game hack' content. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded URLs strongly suggest a social engineering pretext focused on popular online games.

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-robux-without-doing-anything-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/snip-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-before-dawn-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/bird-simulator-roblox-hack-eagle_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-become-a-roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/secrcet-free-roblox-hats_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-a-roblox-game-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-the-green-dragon-wings-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hacker-web-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-on-mobile-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-not-fake-app_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/gaming-cheats-com-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/get-28-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hackcom-roblox-robloxian_GM431946152.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_off00002ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECE 22132 bytes
SHA-256: ed4978952d35fae3e2fcb2b6f81ebff61e41e313b5efe48a64b500116bf43959
font_01_sfnt_off0000601c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601C 19652 bytes
SHA-256: 175c8a58e8e169f12273aafb2eda495858213246dee116a0d68e3e1da0577e93

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