Malicious PDF — malware analysis report

Static analysis result for SHA-256 adfef5ee6f2e3872…

MALICIOUS

PDF

43.7 KB Created: 2021-06-04 01:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 13dd7c9eb8a06c047dcbceddd132530b SHA-1: 046e8486ef1a3335f6444cf812e2a9cf99f8c832 SHA-256: adfef5ee6f2e3872762bfecc6fdf391da9d7ffd8e95f40351613e13a1064b736
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 0.9865

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.online/app/431946152/free-roblox-toy-codes-2021-game-hack PDF link annotation
    • http://www.opac.stieimalang.ac.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/pokemon-go-free-install_GM1094591345.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/tiktok-free-view-30-detik_GM835599320.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-claim-spins_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_off00004fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB7 24308 bytes
SHA-256: 0853e17a877da62073d489bd492cbdeb76ff1531ec90f6767c3e18741ea62001
font_01_sfnt_off00008694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8694 18704 bytes
SHA-256: 310b0eb167ed5acb3e0393954d8d7f46b13cc3d4732db83d1204f458420b6348

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