Malicious PDF — malware analysis report

Static analysis result for SHA-256 b225be72999fa728…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 03:54:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 647ffb98fb4fb59c2a1023b1cbbbf848 SHA-1: ea0a6c806d22a93032bf9595efd61478c8c70187 SHA-256: b225be72999fa7286f0e87698fab331823bfc315489f955ab787e0e4f44a9098
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/free-robux-real-2021-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/new-roblox-logo-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-roblox-accounts-step-by-step_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/10-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002def.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEF 21860 bytes
SHA-256: 06add9ff6b93092c1761af140ba01161bb78997ce3b336a4a53e6dfd0b02384b
font_01_sfnt_off00005dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCB 19192 bytes
SHA-256: 0a56f38ee828cc338b4ecf6fd69a1c4ab782641ccce74c835442ee7dbad06135

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