Malicious PDF — malware analysis report

Static analysis result for SHA-256 b23c8c3f1c333f57…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 06:46:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b986a232d63eea3911e294eddf84f2a6 SHA-1: 55469e47353ad7ff044a693a1ad48699b44bf041 SHA-256: b23c8c3f1c333f57341010dc002f42ff0ccf8b7e3a21341ca27bb84fa59623fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts further PDF lures. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at users interested in online games.

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/how-to-hack-roblox-2021-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-roblox-net-roblox-free-unlimited-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-planet-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-obby-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/tiktok-download-free-jio_GM835599320.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-and-tix-hack-no-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/imaflynmidget-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-generator-no-download-no-surveys-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-open-cheat-engine-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-cheat-supercheats_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_off00003032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3032 22520 bytes
SHA-256: 64a61916c23f5cd77369749eb0efdf3974092f8e0a77474e3e5253d6b225b70a
font_01_sfnt_off00006274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 19224 bytes
SHA-256: 952aa56c448a3876108b271681fe1a59f9d49131b8b4cd095e69c290d9073af5