Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7f59b735f6b587…

MALICIOUS

PDF

227.6 KB Created: 2021-07-04 12:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5f2bbe0995dc2e7a6e89e7f1dd068f54 SHA-1: e7aec537b74c6d33d6503ac5ff7e674d0595afd6 SHA-256: 1d7f59b735f6b5874452aa5d3b212ce989f399920c43b920eeb90e8d1d53c970
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains heuristics indicating it's a lure for game hacks and browser updates, presenting a fake CAPTCHA to trick users. It embeds a URL pointing to a 'pokemon-go-free-zip-code-game-hack' resource, suggesting a social engineering attack to download further malware or engage in credential theft. No scripts were extracted, but the embedded URL and lure tactics strongly suggest a malicious intent.

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-zip-code-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/how-to-get-back-a-hacked-accout-back-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-parris-island-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-hack-zero_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/script-hack-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/new-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-math-games-online-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-tshirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-for-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-accounts-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/bit-ly-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-account-getting-hacked_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-para-volar-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-cheat-engine-walk-speed_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-exploit-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/boku-no-legacy-roblox-free-spins_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_off000321e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x321E4 25728 bytes
SHA-256: c9e94245d1b167d01d47ba93de04b3c1561c6a5e48e979b9f93cfa22820445fc
font_01_sfnt_off00035e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E1F 18924 bytes
SHA-256: 0ad5c6b33cc04e8dfbc2a4687c82c197ca5c1be07b56beba4f91368bbbbefbbf

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