Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6787f55da61baca…

MALICIOUS

PDF

33.4 KB Created: 2021-06-20 10:25:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f6dbee63a4a5eb1009e9a8a1e20f950c SHA-1: 594a214664db56adafa031db745ce937451e6f48 SHA-256: c6787f55da61bacaf177f345eda2586b63d650791810f6d2ac8795145c8e9e1b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a 'free generator / game hack'. The document body and extracted URLs strongly suggest a lure for game-related cheats or currency, aiming to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the malicious 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.co/app/431946152/chat-hack-roblox-pastebin-game-hack In PDF document text
    • https://alimi.com.tw/upload/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-name-for-free-gun_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-island-royale-money-hack_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-roblox-download-for-chromebook_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-hack-mcpe-master-coins_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_off00002dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDE 21672 bytes
SHA-256: 890363a5407a6532baf5540c0c5bcb41043845f5bf5657d9e1464bf2966e0a43
font_01_sfnt_off00005d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2E 19200 bytes
SHA-256: b20b184ac72189e30791fa813d79b2adf49f3d4a53813c55153d6f9b4b81ac58

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