Malicious PDF — malware analysis report

Static analysis result for SHA-256 2676381aa9ba5de5…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 08:59:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2618be5f5d4f8db0e6949fce52456b58 SHA-1: 67ad759162f9931887ab935cacf14ef34e762994 SHA-256: 2676381aa9ba5de57f262cd44694237fb622d27783944b7d7d7335ac1bba3e4e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/new-roblox-free-game-hack, lead to known malicious redirectors that host further malicious PDFs. The ML classifier also strongly indicated maliciousness.

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/new-roblox-free-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-hack-ohne-verification_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-fast_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/broken-bones-iv-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-cheat-andget-things-that-cost-robux-without-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-free-robux-hack-apk_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/ruso-icu-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/cara-menjual-barang-free-menjadi-pakai-robux-di-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robuxs-pate_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/is-hacking-on-roblox-illegal-in-australia_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/websites-that-get-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-place-rewards_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_off000030ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CA 22288 bytes
SHA-256: e119ce08dfedae748a5141f342fea34a33f89035da8def9eb33c12f00005a815
font_01_sfnt_off000061ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 18812 bytes
SHA-256: fc2f2097f6c54663e243cd532616aa310057d4b1248ba531d1e3bedfeb3647d5

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