Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5ee82ec8db9683…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 04:52:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fba67909c62c8ffc55cf39790cad4585 SHA-1: c07183a1116fcb2d319a048af85667f93b557567 SHA-256: 3c5ee82ec8db96832ed6c1730096fccad091ce6369bc86c58127b6537ea71c84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'game hacks' and 'free robux' to lure victims. The primary malicious URL identified is http://netcdn.co/app/431946152/arc-of-elements-roblox-hack-game-hack. This pattern suggests the document is part of a phishing or scam campaign designed to lead users to potentially harmful websites.

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.co/app/431946152/arc-of-elements-roblox-hack-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-gift-card-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cheat-engine-roblox-god-mode_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-without-human-verification-or-email_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-we-are-devs_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/download-speed-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-get-com-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-kak-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/when-will-bloxburg-on-roblox-be-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-og-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-piano-roblox-mobile-download_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-and-get-free-robux_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_off00002f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 22612 bytes
SHA-256: 50d5040a091585418a45872e6b51665f2ee4dcf59f9ea7092f897b2519d2e6ec
font_01_sfnt_off0000622b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 19020 bytes
SHA-256: 765581b8f29c48bcf26a0928d5d132c53428963cf3f1a799376b5dae4d6e3a22