Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e79f27af3b2d8cf…

MALICIOUS

PDF

32.7 KB Created: 2021-06-29 04:24:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e4c809e6f355624afce6dd53c4392718 SHA-1: 537f3b57019a26429705363813dd228e8434e9df SHA-256: 8e79f27af3b2d8cf970a70781071828bfab80486b45f8a3c7dc2728d2bdfae1e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a redirector service that advertises 'free generators' for popular games, a common lure for malware distribution or phishing. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lure suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/fashion-frenzy-roblox-game-for-free-game-hack In PDF document text
    • https://beauty911.tw/upload/files/google-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-robux-generotor_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-to-get-free-robux-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/pubg-2021-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/robux-converter_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-to-get-anything-on-roblox-for-free-easy-2021_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/roblox-robux-hacks-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/roblox-games-free-play-online_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-to-get-free-admin-in-roblox_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_off00002af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF7 21380 bytes
SHA-256: a47a90b82ff18b48ae91152d99804b60beadf8b39e6b4b9586e506e898489a49
font_01_sfnt_off000059ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CE 19456 bytes
SHA-256: e4396ba0d4c6b505e169ec8a1dfaedca5582b632c5e6d6d8908d5a374fab7205

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