Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dde72012be0d2b…

MALICIOUS

PDF

36.2 KB Created: 2021-06-18 16:17:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-28
MD5: e9cba8b282e0ff3e17773c8d343a2129 SHA-1: e224a91dab1382f9e1a79ba5de3e14abb0923f4f SHA-256: c5dde72012be0d2ba724b5ba69215fb44ea945e6725e38bb7a5f7e7358eb0ded
160 Risk Score

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/free-robux-codes-july-2021-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-generator-2021-2021000_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/codes-for-free-knives-for-murder-mystery-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-i-cheated-for-this-axe_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/download-hacks-for-roblox-jailbreak-for-pc_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-boost_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
stream_002_off000031ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31AE 23308 bytes
SHA-256: 6a77e395acf6ae19627b39de98a552b88710394c5b1ec946783b76edc70a2321
font_01_sfnt_off00006648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6648 19712 bytes
SHA-256: 725a4dcb2c1654533971321855796fdd18b3941edc097389450cda0de23e32a7