Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b4928093381dd61…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 15:55:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3a06ce659e6b3cc01478fcee5b06c83a SHA-1: e80ed439844a0abb4ab73868147e9889d423d17d SHA-256: 6b4928093381dd61428f1c447ddaa4a19473ea83a49c8e8044e3659efad6f931
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator / game hack' lures for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the presence of malicious redirectors and the lure content indicates a high likelihood of further malicious activity.

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/roblox-free-stone-shirt-game-hack In PDF document text
    • http://akvamaster.com.ua/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/ahegao-hoodie-roblox-free_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://akvamaster.com.ua/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/robux-earning-sites_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/pokemon-go-free-90hz_GM1094591345.pdfIn PDF document text
    • http://akvamaster.com.ua/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://akvamaster.com.ua/images/is-it-ilegal-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://akvamaster.com.ua/images/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://akvamaster.com.ua/images/coin-master-freebies_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_off00002e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7D 22564 bytes
SHA-256: e318ed7bb6b9324f713bbf68e2db62395e4ed0269626146173ef14364e82f39b
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 18856 bytes
SHA-256: 2254043789b909d73cb4d1213f3abc61cc750598f465ad86dde96c2f70891fea