Malicious PDF — malware analysis report

Static analysis result for SHA-256 19af3b9616e05cdd…

MALICIOUS

PDF

35.9 KB Created: 2021-06-21 11:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 73fa86a3f980ec09ab080e35bddea941 SHA-1: 5ba962c09557333db407d7ff7a94168529f88781 SHA-256: 19af3b9616e05cdd78d76efcba69c7b6ef9939995990ab784bf057127769ce36
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'game hack' lures for popular games like Coin Master and Minecraft. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting malicious sites. While no scripts were explicitly extracted, the nature of the embedded links suggests they are intended to lead users to pages that may download further malware or engage in phishing activities. The document's creation by wkhtmltopdf suggests it might have been generated from a web page, potentially a malicious one.

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/how-to-get-free-coins-in-coin-master-game-hack PDF link annotation
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/hack-roblox-cheat-engine-bypass_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.hearcolors.com.mx/img/blog/files/spin-and-coin-link_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
stream_002_off0000351d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x351D 23424 bytes
SHA-256: d027d108943f5c8c81ecf32a8f3bb21f87b2c33abf5308704eccb717b0f59b17
font_01_sfnt_off00006a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A01 18164 bytes
SHA-256: 9fab875a536b983537b9433768b1ea3e5c55ad95c87001a66781b974c182b662

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