Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce9036daec13757…

MALICIOUS

PDF

33.3 KB Created: 2021-07-08 18:44:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c1bc94fedd6bd27dc9b9763956a49a50 SHA-1: 4fd592781b8342ef238d18ec3ee68b61e0d9ae68 SHA-256: 1ce9036daec13757d5d03fc14fccacb15f80178d34faef2be055b8ec83c4e302
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/479516143/mcpe-hacks-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/como-ser-hacker-en-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-hack-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-roblox-games-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-parkour-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-no-sign-in-account-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-face-maker-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robuxcase-for-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-without-survey-and-verification_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-got-talent-cheat_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-sites-like-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hwo-to-hack-roblox-to-get-any-free-gamepass-mm2_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-in-less-than-1-minute_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/discord-invite-for-hacked-swears-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-script-infinite-health_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_off00002fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA4 22092 bytes
SHA-256: c5905d73a3bc8861353019d573c8e08608bdf8061f8a33595f85ea19bf7af629
font_01_sfnt_off0000609e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609E 17980 bytes
SHA-256: 294d9b4c7acc2ad22185fe7957ebfcfb7d1654808401b79fd4758a1c664e5b17

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