Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a8f227bafe9157…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 08:09:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dde5b4bc01c4e28bf6d9d14f0ff0f0ef SHA-1: abeff9dba33d024f5ef4337a634d0c5b7cd0c67a SHA-256: d2a8f227bafe91573ccf3cc1bfd32eeee73bcee2213b232aba07f6d14addb8ed
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/479516143/free-minecraft-server-hosting-24-7-game-hack PDF link annotation
    • http://bentoking.co.uk/media/storage/editor/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/pokemon-go-free-999_GM1094591345.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/super-pug-youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-party-de-roblox-pisode-14_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/roblox-oof-sound-free-download_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/free-advertising-on-roblox_GM431946152.pdfIn PDF document text
    • http://bentoking.co.uk/media/storage/editor/files/roblox-hack-game_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
font_00_sfnt_off000030c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C7 22124 bytes
SHA-256: 62d0da976c41b80efe4db76f2eca43d6af069d7384d080be23344314d1a5b344
font_01_sfnt_off0000613a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613A 18352 bytes
SHA-256: 91a7490c887560cf1db9cb18ebb1e2a98db2d1ca6a1740dfb9f9cb38742cb9c1

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