Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61ea76a301ed236…

MALICIOUS

PDF

47.2 KB Created: 2021-05-13 08:10:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3c07932528630dce589264b968957b95 SHA-1: 70c2f4a500aa4295330ef05161ea3a871a2cf2f2 SHA-256: c61ea76a301ed23673d99f5b66e85aaf3487ca09ee3fa63796f73cf34d91126f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure, directing users to websites that promise game hacks and free currency. The primary link, 'https://netcdn.xyz/app/406889139/coin-master-links-for-free-spins-2021-game-hack', is associated with a game hack redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/coin-master-links-for-free-spins-2021-game-hack PDF link annotation
    • http://opac.acehresearch.org/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/get-me-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://opac.acehresearch.org/repository/roblox-generator-no-human-verification_GM431946152.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_003_off00004cf8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF8 27720 bytes
SHA-256: 5b81b0c4dd0f35233a4eff946a339ad76122240e5532e5906acd3e290f156b5f
font_01_sfnt_off00008b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7D 2856 bytes
SHA-256: 3d7bc3071562e2144e90d95d8501412365d94dfdf5cdc9090a6c1dd9591605de
font_02_sfnt_off00009552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9552 18456 bytes
SHA-256: a92e7a86c8f96ab5d5d3ed0cab2d9be7dec7c1a4821e4e0502d142dbf0f5217f

Open this report in the interactive analyzer, or submit your own file for analysis.