Malicious PDF — malware analysis report

Static analysis result for SHA-256 d272c04e75ff3b82…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 12:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7cb01e5b6c9893ee985ad1fda3cf9e3f SHA-1: e73b4e967c72046b47f61c245c6ae51c922032da SHA-256: d272c04e75ff3b82407150c203380a74b5bd3d333aa549e1d4d6df4b2cf7357f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The ML classifier strongly flagged this PDF as malicious. The document contains numerous embedded URLs pointing to sites offering game hacks and cheats, suggesting a lure to download a second-stage payload. The presence of a 'download button' heuristic further supports this malicious workflow.

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.tw/app/406889139/spin-link-game-hack In PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/eros-roblox-hack_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-cheat-engine-bypass-download_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/wwe-backpack-roblox-free_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/robux-match_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-free-brown-hair_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-robux-no-human-verification-at-all_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-shirts-in-roblox-2021-no-inspect_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hack-anyone-roblox_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/www-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
stream_002_off00003134.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3134 22852 bytes
SHA-256: 32cbfe53a9c1ce896926595e4b863bf6354f5ced8779cb191d36edbd06906cff
font_01_sfnt_off00006455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 17936 bytes
SHA-256: 291a6753fc2367f8404d431bd18a2520f3a8298b5d66733df321c0bb6f83edb8