Malicious PDF — malware analysis report

Static analysis result for SHA-256 54eee60caae24636…

MALICIOUS

PDF

46.0 KB Created: 2021-06-10 23:49:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0141ad85c82a8cd69911cc2064b24fe3 SHA-1: ad29f817c24439ed2a7763edfc71292e0ee0b5ba SHA-256: 54eee60caae246367ada8fae7887235b9bdf7d48f792cc5b79a41e69517b823c
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 0.9864

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 https://netcdn.tw/app/431946152/roblox-lego-hack-game-hack PDF link annotation
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-to-get-roblox-for-free-on-ipad_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/site-17-hack-gui-roblox_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-april_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/roblox-hack-tools-in-the-game_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-camera-roblox-studio_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/can-people-hack-you-through-roblox_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/how-get-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/free-robux-pastebin-no-subscribe-2021_GM431946152.pdfIn PDF document text
    • http://elearning-man2kotabogor.sch.id/__statics/gudangsoal/files/scaffold-minecraft-hack_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
stream_004_off000053b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B6 26516 bytes
SHA-256: 63bacefbf30dcd7eb1fdee5d9d3969934057c23aa7dc506582231fc75b1cee92
font_01_sfnt_off0000909a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909A 18468 bytes
SHA-256: c5062987a07c7b6d196ffc61e4affbc3ba13ef97bfca044c26fa7cb2a40977ea

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