Malicious PDF — malware analysis report

Static analysis result for SHA-256 6414b37d054ecc21…

MALICIOUS

PDF

45.7 KB Created: 2021-05-16 20:41:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 40c34570c4e7b5d3f7b931e1c0ffdddf SHA-1: 1589791d7885f63a96e16bc7b6a957710b67de2a SHA-256: 6414b37d054ecc2188a81e89294a6f5404213132d66666b0b5d6aee21dfe1aef
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 0.9432

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 https://netcdn.xyz/app/406889139/free-coin-and-spin-for-coin-master-game-hack PDF link annotation
    • http://rkh.go.th/ckfinder/userfiles/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://rkh.go.th/ckfinder/userfiles/files/coin-master-free-spins-moonactive_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEC 25128 bytes
SHA-256: 05269632079b29fb9b99a5a9d87cae16680d43b88af9ffc8e0cf13d9b6c76447
font_01_sfnt_off0000850b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850B 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off000090f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F4 18060 bytes
SHA-256: 42d2e7759bfcfecd447a46542d8809f4e944f7c9df23d0847fbb4c7837fae2b0

Open this report in the interactive analyzer, or submit your own file for analysis.