Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6ebd527c6a1ec0…

MALICIOUS

PDF

45.7 KB Created: 2021-06-09 10:03:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ee22715dc5a90d46b3751a3df074844 SHA-1: 1cb5e336510de3fff1971f26a06bb2b3eb4b15b2 SHA-256: dc6ebd527c6a1ec0d6b58ecc84183e08d43cb0df30cb97055e4dcdc9724c1f14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users with promises of in-game benefits to a redirector, likely to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/free-robux-get-now-game-hack In PDF document text
    • http://loszavera.com/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://loszavera.com/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/get-free-catalog-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://loszavera.com/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://loszavera.com/images/free-robux-for-kids_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_off00004dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD5 30884 bytes
SHA-256: c628062eef2dcb18f96940b9a878302fba30fc2f7b8a25094b6c90df94e8d1c7
font_01_sfnt_off00008fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 18280 bytes
SHA-256: ada9a3cd9dc7fb22e54a96c924dddaaa395894d4bef05c3e2df833068e0bbed6

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