Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8a6efbe754d6a5…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 04:48:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2a9fc260a07708fb1f6c4c94d107653d SHA-1: 0fef7bd1bf78a86ace103b14ca4ac38dde179e5d SHA-256: 2f8a6efbe754d6a5646224b62cc69b486054dc2c19c2a02c981cbf0e55aab00c
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 0.9864

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/431946152/roblox-games-with-free-vip-servers-game-hack PDF link annotation
    • http://pustaka.minangkabau.unand.ac.id/repository/robux-games_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/robux-page_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/pubg-uc-earn_GM1330123889.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-spins-coins_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_off0000503b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x503B 25340 bytes
SHA-256: 8632e6b109934bc1238f894aa44124e0bab09c9010c7e4fda3d7a2fe9af0af42
font_01_sfnt_off00008b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 19448 bytes
SHA-256: 7f710df973ea6b199c1d8a9eebfc78f33dea52488aae7810c2817cc78585c0c8

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