Malicious PDF — malware analysis report

Static analysis result for SHA-256 c461976126ffbf9f…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 21:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b2552469131d1f223ad8511fd90be058 SHA-1: dbb8962e2b9074b1707e4fd9b5bc34098931c7b2 SHA-256: c461976126ffbf9fcb739dc9db693446dbabade2aa6c8c56fcfd19547b6596a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs and the document body content strongly suggest a phishing or scam attempt designed to lure users to malicious sites.

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/431946152/robux-hack-me-game-hack In PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-10m-robux_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-robux-free-2021-fr_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-hack-download-link_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/best-roblox-hacks-for-unfiltered-games_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-robux-hack-generator-club-no-verification_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-robux-and-free-catalog_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-without-phone-number_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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 21648 bytes
SHA-256: 8f05317359cbfc8ed3b52404bce149df99f8e3881f4322fdf7dab19f79f4a290
font_01_sfnt_off00005f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 18916 bytes
SHA-256: d49e1575892b00f4a4e8cdcd45bcc6284cddefc71d3a5758140a1c9b54c8cd26

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