Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ae47139d7b1ad1…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 14:50:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e0b35e898e12fff07d689dbd335da5b SHA-1: 63185a4ebf1a56217989b7d6128b1058867d3d1a SHA-256: 04ae47139d7b1ad1546424507f971af68509f8dbcff681454d59ff4e1dddce6d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on luring users with 'game hack' and 'free spins' themes. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful content. While no scripts were directly extracted, the document's structure and embedded links suggest it acts as a lure to download further malware or engage in phishing. The ML classifier also flagged this PDF as highly malicious.

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-daily-spins-coin-master-2021-game-hack PDF link annotation
    • http://lib.stiesultanagung.ac.id/repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-knife-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/como-hackear-roblox-para-tener-robux-pc_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/game-dev-tycoon-2-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/roblox-cheat-engine-table-and-bypass-2021_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/hack-client_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/black-kfc-roblox-aresenal-hack_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/pokemon-go-free-pokecoins-xyz_GM1094591345.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-free-spins-and-coins-for-today_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
stream_002_off00002e31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E31 23124 bytes
SHA-256: 57b16c9dcfca850d5d31cd054a1677f20e824714aeae132edbfd5aa9d6101a9c
font_01_sfnt_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 19000 bytes
SHA-256: bff5cd883eb4370b15e965f4fd1aca22479e39b86b51e1d2e4068a25e0992d6d

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