Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b5b24f691380611…

MALICIOUS

PDF

34.9 KB Created: 2021-06-19 18:16:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 60e067b2f9c691f25fbba5fdc4c03848 SHA-1: 43ce79b498550e8486261404d62fc04a713ae342 SHA-256: 8b5b24f691380611f862db09ef01c3395541cf1f633a369f51d573d54fcc25c8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/guest-roblox-face-hack-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/wurst-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-human-verification-or-survey-or-offers-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-obc-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coins-coin-master-daily_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_off000030cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CB 22632 bytes
SHA-256: 6e3c4bb71f9bc9a4299e54501e9eb811d27caa638056c543872dfcd091ffdb37
font_01_sfnt_off00006328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 19064 bytes
SHA-256: 2ec473295061e89949a2e0462d60a1c0d5baafda5d395231ad57f8d370e4cdfa

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