Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f0dde233c71ef2…

MALICIOUS

PDF

227.3 KB Created: 2021-07-06 01:18:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 57f328d70f5241302d97143e263aad6b SHA-1: 1f952cdff158101ce3ee73060b2c7dd4dfe356a3 SHA-256: d5f0dde233c71ef20b5271ef16d812fef6239660392becd1be87569b93a56942
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious. It uses a fake browser/software-install lure and 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 clean score 0.0118

Heuristics 7

  • 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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/1094591345/pokemon-go-free-to-play-game-hack PDF link annotation
    • http://laboratorium.sman2metro.sch.id/repository/hackear-prison-life-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-t-get-free-robux-2021-site-youtubecom_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-games-real_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/hacker-music-roblox-id_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/add-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/lastrick-com-coin-master-hack_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
stream_023_off000321a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x321A8 25576 bytes
SHA-256: 96a4b1da7eb9df1a75df1a806abed7a62fdf96c9a9f853e3ed2085e5fd2c8557
font_01_sfnt_off00035db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35DB3 18612 bytes
SHA-256: 6b7c2836de8567b3de89f693560cfbcca992fb532efd22075dad47e70d1d98d0

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