Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc698f4f45e8646…

MALICIOUS

PDF

227.0 KB Created: 2021-07-06 04:05:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2ad8499ea3fc2168081c788d381570e5 SHA-1: 89c171b8f643e6698f22f95a6c36eff87202bf6c SHA-256: bcc698f4f45e864644ad2d4e730b32521df0b583d6937b90b94458a9ea0bb2e3
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-joystick-ios-2021-free-game-hack PDF link annotation
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/games-that-give-u-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-hack-me-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/robux-cheats-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-in-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-roblox-on-chromebook_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/pokemon-go-free-ticket_GM1094591345.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-avatar-free-items_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-with-synapse_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/flip-master-free-coins_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_off00031e28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E28 25576 bytes
SHA-256: 3ea999c79b4041b57a37756315eab966ed34899bf7578c367316ef81c256f655
font_01_sfnt_off00035a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A27 19328 bytes
SHA-256: 770cdc96e9a96cad4f810e056f1f8ad5df01c18ad3f3f8d6791958501c440927

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