Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3010f381ab26f9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 05:59:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7c3374bcde824da8009fb39ead718644 SHA-1: 241fa51f9d554208bed98d0bd506320547f9e5e1 SHA-256: 9d3010f381ab26f9911d0a796ec47cf641f5dd8b33949363ebae93ad8ebd8fbc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that lure users with promises of free game hacks and generators for popular games like Roblox and Coin Master. The primary URL, http://netcdn.co/app/431946152/roblox-fidget-spinner-free-games-game-hack, is identified as a redirector to potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful sites.

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.co/app/431946152/roblox-fidget-spinner-free-games-game-hack PDF link annotation
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/claim-roblox_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/jailbreak-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-get-free-robux-2021-control-panel_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/sites-robux-free_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/wizard-life-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/boko-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-robux-hack_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_off000030c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C0 22272 bytes
SHA-256: 83b8668265f3b537c9ad749e77ab3c9f6788bcf7ea0be9a3674a8fc01e1a1233
font_01_sfnt_off00006253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6253 19484 bytes
SHA-256: 6dd5e00fbb1f5a6d75b0186fc2e654776aa8642515bb7c86f83fd847cb836498