Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e66c3a26ef985d…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 01:35:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4e5166ec43c2812a48114098658f299a SHA-1: a03ad888e69420b98eb6a53e582873a2f5661364 SHA-256: a2e66c3a26ef985d9fc1b61e6255f8368280cf71e996a35d1d7e431f8cd46e70
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 0.9865

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/431946152/roblox-skins-boy-free-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spin-today_GM406889139.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_off00004e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E34 26504 bytes
SHA-256: 0b661ec24f04db7bcd20e9b46f5a739b421a32e54ddc53d5661dc88f9eecf81a
font_01_sfnt_off00008aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEF 18420 bytes
SHA-256: f34de68c913d1c931e579594a611635df95b6f402bf6c6d3ef5f8f4a3ceebe71

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