Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad2b23c4796b412…

MALICIOUS

PDF

34.6 KB Created: 2021-07-07 15:52:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d8eee619ef5bd0a810ca90359ad3d2f0 SHA-1: c4dc0b330af58e5beddb50b4bb372df52b933250 SHA-256: cad2b23c4796b41232ca74ccceff4c5f47a3d4e1cd478f362f6e1b1193e569a6
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/431946152/oprewards-com-earn-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-sensors-entry-point-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-2021-uc-glitch_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-oprewards-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-roblox-badge_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-sell-at-shirt-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/best-game-to-hack-in-roblox_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_off000030e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8 22396 bytes
SHA-256: d71c96bfad4739c6f380fb4b7045880c3365eaefd5582344cd38fd02af396687
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 18820 bytes
SHA-256: 98371626da931bbeb902ee9c6a395854158c625b387237cb0e05488af2fd1844

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