Malicious PDF — malware analysis report

Static analysis result for SHA-256 46515a51801deb74…

MALICIOUS

PDF

34.5 KB Created: 2021-07-08 23:20:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 02cfa494de75905136de7ce6998d5fe0 SHA-1: 9d913419f5b78aa9c767e18a6df8367186f41dd8 SHA-256: 46515a51801deb74513ebef1d6985cbcb96ff9796f231699cec75e366e996e62
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/406889139/free-spins-coins-coin-master-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-beach-house-roleplay-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coun-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-roblox-game-card-codes_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-png_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hack-injector-dl_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-dayz-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/download-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.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_off00003174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3174 22824 bytes
SHA-256: 21e1ec833bf83fe3286350558c58cbd47bcd0af3c07c1f5b68dc212072935699
font_01_sfnt_off0000649e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 18176 bytes
SHA-256: e8ec895f495d139acdb298d515a7ca0fffd25b58e102aa71b0a100d8abb1bbce

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