Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f4883eb1d54c809…

MALICIOUS

PDF

226.7 KB Created: 2021-07-05 00:04:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4fdad7933093612494a3de15ef19e4b6 SHA-1: 7ed969de8b819bbaaefc0fad34ae656c17089036 SHA-256: 3f4883eb1d54c809b794a66facf28406de34544f8781136cf4b79b4d217958b6
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-evolution-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-into-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-online-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-robux-simulator_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
stream_023_off00031e99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E99 25576 bytes
SHA-256: b029f2b8b3a7a23c7b766ce37c6f6d1f96c15d78500e80698cefa3183dbb8aee
font_01_sfnt_off00035a9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A9C 18908 bytes
SHA-256: 5c4b6b74fcf41c2ca199f940512a95841a14b00f2ee9c5185159103d2fd8891e

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