Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a445c5f7747f1b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-18 04:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 760ee6ac381a5221ff1c4927b48d21ef SHA-1: d57a87c55220e1afb3eb57c99aba92176d45caa1 SHA-256: 98a445c5f7747f1b1887d64b967beb8679028084b2b723c3c7d90d6c27a4e4ed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-everything-for-free-on-roblox-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-island-royale-hacks_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/this-app-gives-you-free-robux-yt_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-build-sims-4-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-mm2-coin-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-2021-2-4_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
font_00_sfnt_off00002e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E89 22652 bytes
SHA-256: 681f6250ce5411bcc3f7ef5f32334a9c539e37d78e9ca7f7416c87f394213a45
font_01_sfnt_off00006140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6140 19500 bytes
SHA-256: 8ac6c85d14ad601a2f838d326f13bb65a8cbea6eb2aabff3a17f1d3f15c95ce9

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