Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8890f9344ccb97b…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 05:12:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6a27ae4442535f875e341d91de87e471 SHA-1: 47d42a5cfea8975a046e49adfa5e732c0447450b SHA-256: e8890f9344ccb97b9fcb0a178d617663883bb561b156c16ad7e28e7bfb694bda
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'free generator / game hack' related to TikTok followers and likes, directing users to a suspicious URL. This indicates a social engineering tactic to trick users into visiting a potentially malicious site or downloading further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interest in free in-game items or services.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9804

Heuristics 4

  • 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.
  • 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 https://netcdn.online/app/835599320/free-tiktok-followers-and-likes-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004dd4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DD4 24240 bytes
SHA-256: 808f3ea4b60a8332d9d21e52e7d32d3f3f847a92dd12a6002c48792ad9350c64
font_01_sfnt_off00008561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8561 2896 bytes
SHA-256: 98478e2fbfabd582329b6206c0d46f67523cf5e299cb16118f1065b4dd5ec6a6
font_02_sfnt_off00008f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F48 17868 bytes
SHA-256: 3d92bf9f97e5112d292b407947535e704fb05ee4c3221ca2b39c5e27e22079fe

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