Malicious PDF — malware analysis report

Static analysis result for SHA-256 6544336f9e8e1f42…

MALICIOUS

PDF

35.5 KB Created: 2021-07-08 16:04:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8f37382fe1654b45e6b8cc8fa8c1c0ca SHA-1: 963df6bc8d8913c53d9a6f82f99dbb19092eb146 SHA-256: 6544336f9e8e1f426c9e2325e22a04b9d4e31f2df410c89b461af59121746c54
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically mentioning 'coin-master-hack-ios-no-jailbreak-game-hack'. The document body also contains this URL, reinforcing the lure. This suggests the primary goal is to trick users into visiting a potentially malicious site, likely for credential harvesting or malware delivery.

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/coin-master-hack-ios-no-jailbreak-game-hack PDF link annotation
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-roblox-accounts-youtube_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/real-way-to-get-free-robux-2021-september_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/withdraw-robux-at-http-free-robux-space_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/cheat-roblox-bleach-primera_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/a-real-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-daily-free-spins-and-coins_GM406889139.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
font_00_sfnt_off00003330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3330 23320 bytes
SHA-256: fd9baab39dfb684b3aad29f1e72ff3db2164ebeb02d2657d2f4a8742726066cf
font_01_sfnt_off000067aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AA 18404 bytes
SHA-256: 345b4b10f5918f406b1f79bf6dc118df3430b7a97c564e099ef402e5b5a3dc62

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