Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80bead662834b91…

MALICIOUS

PDF

34.2 KB Created: 2021-06-22 18:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 925bb9a7f565cf4885cada2edf399a97 SHA-1: dd453c6d82eb88a0c89bc8d1ff41b4b36f5d12dd SHA-256: f80bead662834b9111b230757bd21992bcd2416c8d7ce2e1db94bbe91364116a
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/479516143/how-to-get-a-free-minecraft-server-game-hack PDF link annotation
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/mythical-world-roblox-hack_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-rules_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-no-human-verification-or-survey-2021_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
font_00_sfnt_off00003190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3190 22260 bytes
SHA-256: ec7b8c03406b1a462344b4062248064ec1f4f4291895135adb9463330bdf42d8
font_01_sfnt_off00006314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 18276 bytes
SHA-256: c7687a4ed826b999755e6fe3d140333e3438c4cba827dc1a6d1eeb6d89324bde

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