Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa971b5d8be4175…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 08:06:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0f130a10efe2560e86c22c2b3ac268a2 SHA-1: bf7a897af1167d1ef584c744c242b4a605a00d41 SHA-256: 4aa971b5d8be4175c3a76b801710d2c6c9a27d077ac4e49046aca03e2216bdc5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically mentioning 'creative mode in Minecraft' and 'game hack'. It includes a link to a suspicious URL, http://netcdn.tw/app/479516143/how-to-get-creative-mode-in-minecraft-server-hack-game-hack, which is likely intended to lead the user to a malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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-creative-mode-in-minecraft-server-hack-game-hack PDF link annotation
    • http://library.stieyapan.ac.id//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robuxs-no-human-vefication_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-people-girl_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/download-roblox-free-windows_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-hack-into-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/tiktok-free-like-generator_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-the-green-dragon-wings-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/wurst-client_GM479516143.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_off000033e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E6 22372 bytes
SHA-256: 279829f574e1893ac0a726000dfb4802bac73919c5ef94a057284847e4db35d5
font_01_sfnt_off0000656f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656F 18620 bytes
SHA-256: e9ae3ffdb85453ea0374ab223d3fde66ce2aaabe57ac171a5b8ae266564cfd25

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