Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c0a6ad0e45f8433…

MALICIOUS

PDF

37.4 KB Created: 2021-06-20 17:44:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e9d91b1dd1f92aa40c4a7e0c74c89767 SHA-1: 9ac0f56f21d7b81d8010836fc63409e9f4e1a449 SHA-256: 5c0a6ad0e45f8433a1bcf8a58aa2d61b52fe6afac8047907e067ceaf4a4a3a59
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lure users with promises of game hacks and free in-game currency, such as 'free-coin-master-coins-and-spins-game-hack'. The document body and heuristics indicate a redirection to potentially malicious sites. No scripts were extracted from this sample, but the overall pattern suggests a phishing or scam attempt designed to trick users into visiting compromised websites.

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/406889139/free-coin-master-coins-and-spins-game-hack PDF link annotation
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-coins-roblox_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/roblox-mad-city-free-cars_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmchildren.co.uk/admin/ckfinder/userfiles/files/minecraft-windows-10-edition-hacks_GM479516143.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_off00003a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A59 23464 bytes
SHA-256: b12c86fec588054fce4b41ba11bc3e762ac8a8c301e1e472089db4d128202a2c
font_01_sfnt_off00006f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7E 18348 bytes
SHA-256: cc12283f691ecd9c6c4381c5355a15c3235cfa1ea9601b68c1f91d3883d88a7b

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