Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a15340a3c37ba4…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 01:23:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1fea736ec5dad171622ba5c2fe0f2d30 SHA-1: cb95170d9cf2455b6b664bd97d4257eedfb080cc SHA-256: 21a15340a3c37ba43d310020583d9ee423bd572f07ead969fbc91a84af3f1a7a
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.tw/app/431946152/roblox-no-download-hack-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-robux-hack-2021-working_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cheat-paintball-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/executer-command-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/script-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/descargar-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-roblox-cards_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/shark-bite-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-group-uniform_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-working-hack_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
font_00_sfnt_off000030c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C0 22784 bytes
SHA-256: 5a95bd2a22d73670062e1171c532c7fde187df0feef234532c6b97d0e90beb92
font_01_sfnt_off000063c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 19160 bytes
SHA-256: 38656f57ea632c5ae9aff0990ef32f47b4b1b394188ef10efa33bf9d5ff74d0d

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