Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3cfd5cef8347ebc…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 21:07:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2f271932c1b9f22d9e4f6de77fe0519c SHA-1: a214f58a4695ee9e0ab5240ddcf522a004df1e91 SHA-256: b3cfd5cef8347ebc81e0f6a8855285c8d7d0a7073702d2d67a3765ac9753a366
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a game hack generator, a common lure for phishing or malware distribution. The embedded URL 'http://netcdn.tw/app/406889139/coin-master-golden-card-hack-game-hack' is directly associated with this lure. While no scripts were extracted, the overall structure and content suggest an attempt to trick users into visiting a malicious site.

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.tw/app/406889139/coin-master-golden-card-hack-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-parris-island-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/hack-lecteur-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-robot-inc-cheat_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-obc-roblox-codes_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-apk-33-download_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
font_00_sfnt_off0000327d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327D 22800 bytes
SHA-256: 1dee8531e9316a9003aac13849d4f66a5ff4e723bc2260f244024d083718ef91
font_01_sfnt_off000065a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A1 18252 bytes
SHA-256: 86d208c87cd9723521760f39289724e0803f9f68e91a8c51082ac7ab23afa3dc

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