Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af3350c1518f73b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-09 21:15:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e4ebc16dc8cd7198b7f89a38263d522e SHA-1: 2bbe7200419a1a508b70f03f8bb71c726df41a42 SHA-256: 2af3350c1518f73b1ba5f4a9b39fbadc05a08ac714a9f088e27bb4d017e2ac3c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free generator or hack for popular games like Roblox. The primary link, http://netcdn.tw/app/431946152/collect-robux-game-hack, redirects to known malicious infrastructure. The document's content and embedded links strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. 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/431946152/collect-robux-game-hack In PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-hack-or-download-2021_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/protosmasher-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/free-tiktok-fans-5k_GM835599320.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/roblox-hack-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/a-roblox-profile-have-russia-profile-free_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/roblox-free-robux-obby-by-elevanoz_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/elemental-battlegrounds-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/ars-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/robux-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/roblox-change-robux-pastebin-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/how-to-create-vip-server-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/how-to-get-hacks-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.lbhbali.or.id/new/public/ckfinder/userfiles/files/robux-matchcomfree-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
font_00_sfnt_off00003117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3117 22292 bytes
SHA-256: cd0ea661bb81161244a5748c2c120b0b4b197592e135839f6135f71eb2543d15
font_01_sfnt_off0000625d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 18728 bytes
SHA-256: d66c08f78f239917c4ec7ae029ac685f0727a5c25a17f7bea25f393002770508

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