Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e32b0ae4358d8b…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 10:39:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1bea44f800d1a85ad19bda0278a1e40e SHA-1: 15171e2bce62dec877fe63cc452b29f3a4fa2f0d SHA-256: b9e32b0ae4358d8bdcb59dd6f7e24515dabeb8ea2afbc9a207a930dfe6801435
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/406889139/free-spin-coin-master-link-2021-game-hack PDF link annotation
    • http://perpustakaan.urindo.ac.id/repository/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-auto-clicker-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/jailbreak-cheats-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/www-coin-master-hack-tk_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_off00002e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5F 21980 bytes
SHA-256: 7529b3f04f0cabd7a4ede2cfa237610851d32dbb70205f4e7e29577127ab817e
font_01_sfnt_off00005eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEA 18748 bytes
SHA-256: 21e227a5b4a4e86201c5ffd53a68098e06ad4a81ecbeade678e9824eb4386a01

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