Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f26b85ea9e2e97…

MALICIOUS

PDF

34.8 KB Created: 2021-07-02 02:27:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c850bad12c88f2de241eb871986b39b0 SHA-1: 1068ed211db0868e55d42dc5268e4796d94c9040 SHA-256: c4f26b85ea9e2e97192ba4c5c9e825d78d5eccd903e48104ec6831785e79c86e
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.co/app/431946152/free-dances-on-roblox-game-hack PDF link annotation
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/equillex-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-free-robux-on-mobile-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/synapes-roblox-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-redeem-card-codes-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/goud-info-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-download-free-app_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hack-werardevnet-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-online-no-download_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-games-that-work-sepember-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/hack-roblox-wipeout_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-cards-pin-number-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-robux-cheat-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-robux-no-survey-or-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3226 22300 bytes
SHA-256: 26786abc5422df83da3f53c2539132ef2103158570814b8732f336a0790d56c5
font_01_sfnt_off000063cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CD 18816 bytes
SHA-256: 103a59e07e5e4945309869d31242f149fc202d98a3c43144e817aa0ace6d1550

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