Malicious PDF — malware analysis report

Static analysis result for SHA-256 6799232994c4a8d0…

MALICIOUS

PDF

43.6 KB Created: 2021-06-03 07:07:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5808c2ba04528cef6aea84ae7230693b SHA-1: 4d121d582a0649c5179d28c9e414328b155a4723 SHA-256: 6799232994c4a8d008a66dc00dd7d05d4c50968ed1d3463e0922f8443e6b114c
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/406889139/free-spin-sites-for-coin-master-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-ad_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
stream_004_off000050c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C2 24912 bytes
SHA-256: e2c22cb72b387ae75ddbd3ee9909f7e79cb4bedb6af8ac9595b6bdad6d675cf7
font_01_sfnt_off000088fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FB 17884 bytes
SHA-256: a210d42f6902d7d9d5bff07919c8107c405d033dd36282e8d99cfff98ec98e98