Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c5f40ee2246a23…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 01:11:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 675d81a7a18748a6d73b520e48926945 SHA-1: 7446ee9032e9049e5174cc77906ebde9a771b3b8 SHA-256: c6c5f40ee2246a2317b7afbf5f72e86d68479436b29ab835da6d9c2a826a8060
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting "game hacks" and "free generators". The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-mod-apk-2021-game-hack, is identified as a malicious redirector. The document's content and embedded URLs strongly suggest a lure to trick users into visiting malicious sites, likely for financial scams or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/coin-master-hack-mod-apk-2021-game-hack In PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-hack-hilton-hotel-roblox_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-install-hacking-programs-on-roblox_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-hack-ninja-legends-on-roblox_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/hack-pour-avoir-des-robux-facilemen_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/_GM479516143.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/freer-tiktok_GM835599320.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/pc-roblox-hack_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/roblox-star-code-free_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/roblox-dungeon-quest-hack-free-download_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/robux-cheat-apk_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://abellamoveis.com.br/ckfinder/userfiles/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FAD 22412 bytes
SHA-256: b41a8d3da468745b9d7431223033785ccce56890a8053011a89daa4eea727dce
font_01_sfnt_off000061b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B5 18756 bytes
SHA-256: a597e2a1a6313d69caaefc0fd9e6b3b52d3816ecea07cbaeac835cf7e101dd2a

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