Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97ae51b6d293c47…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 06:52:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 86cbae630e909708f6ea0af914022a65 SHA-1: 0ea3731b8ce3d20dadf9981c39c2c907d972116b SHA-256: f97ae51b6d293c47c871658f6836a139cb352f44cb7f90b17d33029ff8594473
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to websites offering "game hacks" or "free generators" for popular games. The primary link, http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-on-computer-game-hack, is flagged as a lure for game hacks. The ML classifier also strongly indicated maliciousness. The document's purpose appears to be tricking users into visiting these sites, which likely host further malware or phishing content.

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/how-to-get-minecraft-for-free-on-computer-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-free-ship-code_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-games-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-values-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/calamari-roblox-free-accounts_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/tiktok-free-real-likes_GM835599320.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_off000030e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E3 22428 bytes
SHA-256: fe60916751d4224d6f649d64f6057d66bb71947195ed4ff80b766e5680bd2872
font_01_sfnt_off0000623a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623A 18736 bytes
SHA-256: 17f0bfc7da489febe2cf31a01e732b59c776963868fc2712bfb7438877b5a354

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