Malicious PDF — malware analysis report

Static analysis result for SHA-256 05062620c2487383…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 10:57:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 52d09ebbd5a3d5df746758816db46c29 SHA-1: fe30b606cc75675ed16862560fc6d6ea123cb4aa SHA-256: 05062620c248738377fc962dcc091ceb7c9e42d2263464fc75fcd6bec477c5b1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to sites promising game hacks and generators, a common lure for scams or malware. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of numerous suspicious URLs and the lure of free in-game items strongly suggest a phishing or malware distribution attempt.

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.co/app/406889139/coin-master-game-hacks-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-support_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-giveaways-top-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/script-robux-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/urbis-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-you-don-t-have-to-do-anything_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/working-redeem-roblox-cards-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-take-someones-group-on-roblox-hack_GM431946152.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_002_off00003087.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3087 23140 bytes
SHA-256: d37771ed899fe1a55a40670db353946f68f8ed0606b09866afff159531d4e868
font_01_sfnt_off000064aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 18264 bytes
SHA-256: c1c21b29a6afb4d06e4d6845aa9afd5500216469eff45eb2d027be7bd9c24dc5

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