Malicious PDF — malware analysis report

Static analysis result for SHA-256 8832385e7f263227…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 20:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 40541e683eacf9ec608422a37c10de8a SHA-1: 5768dffd0d90c36207e967a5edbb4cb54eebcebd SHA-256: 8832385e7f26322753d215fd431d088a1ebd7f334283e4125864b7ed06c21198
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/406889139/coin-master-daily-free-spins-link-today-game-hack PDF link annotation
    • https://pn-tapaktuan.go.id/pustaka/repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-website_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-for-offers_GM431946152.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_off000049b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B2 25416 bytes
SHA-256: 19d1c0f58e8aa9840387e138500692e2210b248bbff04ad1c9350f113e92bf58
font_01_sfnt_off00008338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8338 18652 bytes
SHA-256: b7acebacf47409c7f0f2932ba41e4c1dc120b4ef5280387cf9333091bd47b2e0

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