Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68bbca27c6dcc67…

MALICIOUS

PDF

47.2 KB Created: 2021-06-03 09:24:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2426d686e6537ca0fede8e01edffbdee SHA-1: 689d2c921f035aff64201401ffe10e2a74ce3317 SHA-256: d68bbca27c6dcc679d64ed62df1d725485ff2ac13983fe21d924dc3b870f0ba2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9769

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-free-clothes-codes-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/cheat-roblox-offensive_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/are-minecraft-realms-free_GM479516143.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_004_off00004f8b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F8B 26888 bytes
SHA-256: 89ed49d4b698341803d18262085616e512b2312c23041042610c969bd4e6178e
font_01_sfnt_off00008b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5B 2844 bytes
SHA-256: d4efd49219a7ff6424c923a6ccef5b7e1750ded18bbd79546f2ad196ddc76c43
font_02_sfnt_off0000951b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x951B 18392 bytes
SHA-256: d8b17fa3f29c5fc3b2ca0cecc93d61ab3a50b68dc1f93f0739daeae1c5528549

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