Malicious PDF — malware analysis report

Static analysis result for SHA-256 10444757db660b4d…

MALICIOUS

PDF

227.2 KB Created: 2021-07-05 20:14:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6a80da322828666641db82266e6ac3cb SHA-1: a63c88882f88124980043f3688eadac04d38606a SHA-256: 10444757db660b4dac2f09940dc0adeb6289968552710e6d91883e4bb0f9dc5e
172 Risk Score

Malware Insights

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

The PDF document contains multiple lures, including a fake CAPTCHA and a 'game hack' theme, to trick users into clicking embedded links. The primary link, http://netcdn.tw/app/1094591345/pokemon-go-free-8-bit-game-hack, suggests a social engineering attack aimed at users seeking cheats or generators. The document's structure and embedded links indicate an attempt to redirect users to malicious sites, likely for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0117

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-8-bit-game-hack PDF link annotation
    • http://librarysenior.com/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-hacker-skin_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-adventure-story-wraith-card-hack_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-no-survey-or-verification-2021_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/hack-sever-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/cheats-infinte-jump-roblox-fe2_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-cards-2021_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-infinity-rpg-infinite-money-hack_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/roblox-hack-me_GM431946152.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_off0003200e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3200E 25576 bytes
SHA-256: fef21f148fea8dc7bde71128172e9b631512f2d3ca9c460d6ae5a2f05220268f
font_01_sfnt_off00035c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35C0F 19008 bytes
SHA-256: eb9644a101e360d83f066632bb9665cd0b4a3157b9f70733d3cb5971b5fb14fa

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