Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadb5779f86b3d48…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 07:12:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 74c3b9a0d8c529bca67707db3b9043db SHA-1: f42f0ca8099d3cce4e0b963702e30319f016781f SHA-256: fadb5779f86b3d484ea50eca4a12a19c774dbea65cc466b65685e8018bd81ed2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, specifically targeting 'Coin Master'. The primary URL, https://netcdn.online/app/406889139/coin-master-hack-without-verification-game-hack, is likely a redirector to a malicious site or a download. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick the user into visiting a malicious resource, aligning with a phishing or social engineering attack.

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/coin-master-hack-without-verification-game-hack PDF link annotation
    • http://opac.pps.uin-alauddin.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/free-stuff-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/tiktok-viewer-free_GM835599320.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://opac.pps.uin-alauddin.ac.id/repository/minecraft-pe_GM479516143.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_off000053e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53E8 24076 bytes
SHA-256: 1f26d25bafd8cc89dcf2cd9c25984485cac9e744c6980d552e381901dd342705
font_01_sfnt_off000089ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89CE 18356 bytes
SHA-256: dc73d1475286564dbbcfd7fe1f785306788ee44bec01666c46f1ad38f7aa2791

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