Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6d0c519db21422…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 22:27:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3e38baffa8ec61dcaac0279be209817a SHA-1: c4dda258fe3619858a4c1b7057e2e3b4bd01d4e9 SHA-256: 3e6d0c519db21422d022025a92524c425c07e1ea2ad600849727bb96e07c1eeb
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 0.9865

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.online/app/406889139/60-free-spins-on-coin-master-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-free-spins-in-coin-master_GM406889139.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
stream_004_off00004ede.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EDE 25616 bytes
SHA-256: caa4a16383ffc0fc1ebaf0c54ba31bd30fd387b89a83035c0875fb8880556233
font_01_sfnt_off00008924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8924 18224 bytes
SHA-256: fb8ca16964c1cfb5d3ac46424d3104c0504772e256342925334c3af996e4fdd1

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