Malicious PDF — malware analysis report

Static analysis result for SHA-256 831dce91e2e2fb6b…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 11:21:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 499adf6c6cc74ea7664fc56f925b715c SHA-1: 7cb034f6e590575a60f997127e1aa6694b207246 SHA-256: 831dce91e2e2fb6bff6705bbcceddcce614f7efbcff9a976ca4757d6acb26fb9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with game hack content. The primary redirector URL is http://netcdn.tw/app/431946152/roblox-hack-ga-game-hack, which likely leads to further malicious content or malware downloads. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting 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/roblox-hack-ga-game-hack In PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-hack-robux-download-ios_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/how-to-fix-roblox-hacks-wikihow_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/cheats-fro-csgo-in-roblox_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/protosmasher-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/black-clover-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-cheat-discord_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/ccv3-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-roblox-accounts-with-robux-2021-november_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/download-cheat-for-roblox-counter-blox_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-items-roblox-script_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/how-to-hack-roblox-top-model-wins_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/buy-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/nuevos-hacks-de-roblox-2021-benimo_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/hack-facile-sur-roblox_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/how-to-install-cheat-engine-for-roblox-no-winrar-required_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-jailbreak-teleport-hack_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_off000030a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A0 21676 bytes
SHA-256: 04d9309c20dc42b540df3de69b45b4e4cf6a31872f1665c10eb212007b5dca1e
font_01_sfnt_off00006005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 18656 bytes
SHA-256: 54ca192054bc8c657e8a7f9e976e5c419448410dec473bf437c4f06f1192f6de

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