Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8e9ca18cd52fb5…

MALICIOUS

PDF

48.5 KB Created: 2021-06-04 03:44:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 88a7f8e0c97a8ce5eef89f04c4f9b516 SHA-1: 6754c6205805514706e890fd535ab7eaf01141be SHA-256: 2f8e9ca18cd52fb5bde26306f1aa2380274f73abf36b3c9356fc3211efc0a34e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links that redirect to a malicious URL, masquerading as a "free game hack" generator. This lure is designed to trick users into visiting the malicious site, likely to download further malware or engage in credential harvesting. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.online/app/479516143/universal-minecraft-converter-free-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/pokemon-go-free-level-40-account_GM1094591345.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54E5 29044 bytes
SHA-256: 4baebd5a78b4efa58b038cb0f9c8a2ec402eaaf661b858881997c36e4ee3de91
font_01_sfnt_off00009142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9142 3128 bytes
SHA-256: e72d8d1e26c87a5aea965968b922732c7406bc33888678dc3a8c04cb95b3c770
font_02_sfnt_off00009b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B83 18084 bytes
SHA-256: e9d0f0345694b9a79203755563a3dfebd4f00fdb0e59242a0f52e95bef3afb94

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