Malicious PDF — malware analysis report

Static analysis result for SHA-256 3595218c358eb06d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 03:11:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 07ad6cb6404674e057761e57a9cb35c3 SHA-1: c0302933a7b019b36ae8d0fb22610ed6aa053004 SHA-256: 3595218c358eb06dee5aebfeffb7f85dad7af4c3d64945ce36867bd11c9e1cd4
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/free-roblox-gamepass-game-hack PDF link annotation
    • https://pustaka.mic.sch.id//repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/roblox-robux-hack-online-no-survey_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-roblox-gift-card-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-roblox-accounts-with-obc-and-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/kachifpro_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/how-to-get-free-robux-on-the-front-page_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://pustaka.mic.sch.id/repository/piano-keyboard-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://pustaka.mic.sch.id//repository/how-to-get-free-followers-on-roblox_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_off00002f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F46 22792 bytes
SHA-256: 3dad5ee0a3d80f28efa4d8edbe3e5cfdef8f8d184954280aa2c27c0b2255d857
font_01_sfnt_off0000626e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626E 19088 bytes
SHA-256: 5180561e7f437633fa47fdc1043832078b401e9214e09258b749dcd2cc24a720

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