Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c8a7fca8aae2c6…

MALICIOUS

PDF

48.0 KB Created: 2021-06-03 13:28:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f5ccfbc77a43c4f6fdc2ea1c155dbdf6 SHA-1: d2fa2bcf44d72032d1dfc540c5ac615ce2ebe487 SHA-256: 58c8a7fca8aae2c62b64d9c0c35f4a4ac468639057bd861ec3fefab340267fd6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to pages promising game hacks, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the nature of PDF exploits often involves embedded JavaScript to facilitate redirection or payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-online-hack-no-survey-no-password-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/tiktok-for-free-textbooks_GM835599320.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005475.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5475 25272 bytes
SHA-256: e7d4e45936c90961aefab117137b02ddf40c1ab68a3422311072e6e66295e0a2
font_01_sfnt_off00008db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB4 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off0000979f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979F 18716 bytes
SHA-256: 851b55b86fae67a7710f5a0f414e3dc181a06a9a41e12226fd5d3557d65ffbd6

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