Malicious PDF — malware analysis report

Static analysis result for SHA-256 907fcbead143513d…

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 08:32:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 03819f59682f1fa2957032c3fe2d13fe SHA-1: 35b7c8b72d23897da0e5e40e75b4b744fa1190cf SHA-256: 907fcbead143513d00b46206fdadec0cc5036bd6ff61ed877572263fea585c99
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/cone-master-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info//repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hack-2021-admin-commands_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-infinite-robux-by-hacking_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-hack-players-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/robux-hack-no-download-apps_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/pokemon-go-free-to-download_GM1094591345.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-song-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-change-a-leaderboard-using-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FAE 21944 bytes
SHA-256: 22d9fcc9bae0d9f195b283056e23c2a02b595dba0ea53f3ffbe10f6b02d91c90
font_01_sfnt_off00006029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6029 17712 bytes
SHA-256: 1d2b8c84664aeb21ec7d812a4df566ec291b937f93597c41560adcddb13db525

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