Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f10ae7459a49e3…

MALICIOUS

PDF

33.1 KB Created: 2021-06-28 08:46:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ed61a772bad3f2ff1debe1c5dcf76ef SHA-1: de0593fabbab45a47d2b2381a8db7c4275973e22 SHA-256: 90f10ae7459a49e3679294849f3216d03a0b2b6461b69c4c75c2b96e61aca5e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The document contains multiple embedded URLs, including one pointing to a known malicious redirector infrastructure. The primary goal appears to be redirecting users to potentially harmful websites, likely for further exploitation or credential harvesting.

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/free-robux-no-downloads-or-verification-game-hack In PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/robux-gratis_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-roblox-accounts-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-girl-hair-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/cheat-forums-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/unpatchable-new-roblox-exploit-hack-skyline-stat-change_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-password-hacker-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-hack-1021_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_off00002a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A17 21884 bytes
SHA-256: 99245e011dd2809bf6823057ad112d3c3fd2bca2bebb331a98ac74b527c382bf
font_01_sfnt_off00005aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA3 19652 bytes
SHA-256: de45f1c22a38ec5c5afe1016c4332ecc45141ff64652a4c5bf5d13bfaeec58af

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