Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0e433a4da1b9fe…

MALICIOUS

PDF

34.9 KB Created: 2021-07-10 02:32:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e287ec98f7f50909ac45711793d1d62e SHA-1: be450836f0a563cca0689e8f5f1f2ae26867714b SHA-256: 1d0e433a4da1b9fe0389df1540a30565cfe726e7d9f667efda9b15bf7242661c
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.tw/app/406889139/coin-master-tiradas-gratis-2021-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/pastebin-robux-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-counter-for-roblox-apk_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-speed-hack-2021-may_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-uploader-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/gamekit-didnt-give-me-free-800-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-follow-a-player-everywhere-he-goes-roblox-hack_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-unlimited-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-customize-roblox-skin_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-account-with-ultimate-driving-cars_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/best-meliodas-roblox-face-free_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-upload-audio-for-free_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_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 23288 bytes
SHA-256: ca263eb0e739dbfc2869517903c935b6324ec4619ef5f9eda0a2c42a65a93c1f
font_01_sfnt_off000064f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 18412 bytes
SHA-256: 205f02078e44dc7cbfbb8341c4d4cb1c387440bb67eb4bb631bd87716442abcf