Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d757c0b3a1c3d9…

MALICIOUS

PDF

42.3 KB Created: 2021-06-03 08:52:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: be01fbb450cf1166310cae3fae9f6f37 SHA-1: a6af5ed0c5d1ae51880c01c4c8796f86866883f4 SHA-256: 97d757c0b3a1c3d91f77bb79661f2033e9c70e9992c03720c107fbc635666e81
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with a primary URL promoting a 'game hack' for Coin Master. This heuristic strongly suggests a lure to a malicious site or a download. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/how-to-get-free-coins-on-coin-master-2021-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/tiktok-free-dance_GM835599320.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/pubg-uc-easypaisa_GM1330123889.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-mod-apk-2021-download_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_004_off00004cfd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CFD 23748 bytes
SHA-256: eb23ec43afbe8f573f9276148b83bf6df1ca0f1641abbbb8b0809475d08c25ec
font_01_sfnt_off0000828e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828E 18276 bytes
SHA-256: ed87a9cf83e2375ebb0940fb8e34e8bfcad05e854391f2218d22e51fb5fbc08b

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