Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5d877848d7ac08…

MALICIOUS

PDF

226.6 KB Created: 2021-07-05 23:12:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 67d4cb0bf80fc241b130596dfd8cdc12 SHA-1: d9ce791ef806ca25ac307ad4de20188695f18711 SHA-256: 1d5d877848d7ac0829b65622c65215555ea77c8c64708437b6164f617b11982b
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-and-home-transfer-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/roblox-gfx-free-render_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/karina-roblox-zombie-free-zones_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/http-cheatonlineeu-robloxrobuxhackforfreeproofs_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-need-for-speed-cash-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-protect-speed-hacking-from-games-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-cheat-engine-alternative-apoc-rising_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheats-for-roblox-on-phone_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-shirt-maker-online-free-shipping_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-accounts-not-banned_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheats-for-roblox-high-school_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_off00031f2c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F2C 25576 bytes
SHA-256: 083ffdfb204000a6ba710098e30ba53f952938eec2f6436c40503407b1974ae2
font_01_sfnt_off00035b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35B30 18532 bytes
SHA-256: aef4676caa0e74aa825dfe8a9997dc939150d8aa49876168cbcdcc87df054f8e

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