Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d98418d81fd3702…

MALICIOUS

PDF

40.8 KB Created: 2021-05-12 13:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a8f22b38bccc4c4f494640c8f71f7383 SHA-1: cd3c0e0d765121aceb0911d8212177b0eeca7015 SHA-256: 2d98418d81fd37026608c51ba9dde1955f0490b2725c9bd1f324b7040ee129cd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a game hack generator, directing users to a suspicious URL. This lure, combined with the ML classifier's high confidence, strongly suggests a phishing or malware distribution attempt. Although no scripts were directly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/hack-the-game-coin-master-game-hack PDF link annotation
    • http://www.arichuna.com/images/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.arichuna.com/images/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.arichuna.com/images/files/coin-master-game-hack-app_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_003_off000047a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A4 23800 bytes
SHA-256: a2db7e62f1472c3e74a03c6a6086269499bde62e5298cb06eb48e35e1a5bc17f
font_01_sfnt_off00007d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8C 18144 bytes
SHA-256: 2f83051d17fae7824be312dca8a0683f54a2c939f925aee2db8065487592d47a

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