Malicious PDF — malware analysis report

Static analysis result for SHA-256 523be0e6fcf004c4…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 06:26:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0ab08de7b8dae6d1465de0223c114243 SHA-1: a55668d37f23a9417f7daba19ad7afdb9536a736 SHA-256: 523be0e6fcf004c4c2b7c2ba556ad725da37711546713ca2d8cd0e6c4aa1f883
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/how-to-get-free-spins-on-coin-master-game-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/call-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-into-peoples-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-catalog-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-robux-hack-no-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-glitch-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-seraph-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-dot-truck-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-scam-message_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-chromebook-codes_GM431946152.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_off00003420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3420 23256 bytes
SHA-256: dd7245b959988fce739fbc7e32ab6b2323af07904fa05b9743979e16614ac0e0
font_01_sfnt_off0000683b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683B 18600 bytes
SHA-256: b875b2547fdd86b5ddfc4bd9990df968a5fdc089a690d798ffa545ad033f7ff5

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