Malicious PDF — malware analysis report

Static analysis result for SHA-256 077b68f350f62fb4…

MALICIOUS

PDF

28.1 KB Created: 2021-05-10 19:10:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bcf8997388a96211be9c276bc634d84e SHA-1: 9b168d55b11bb79ad29eabf78c84968d685c69b8 SHA-256: 077b68f350f62fb492edd4a487971984629e4743888d96879048b1b3735e5763
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 0.9789

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.xyz/app/431946152/roblox-promo-codes-for-free-robux-game-hack PDF link annotation
    • http://5prudov.ru/images/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-free-mighty-lion-card_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://5prudov.ru/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://5prudov.ru/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://5prudov.ru/images/minecraft-hacked-client-download_GM479516143.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_off00001f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F82 20072 bytes
SHA-256: cfa11f0307ba134ea108788354e6f1089ff9e8ded38f6e202a297e08308aff27
font_01_sfnt_off00004a04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A04 18676 bytes
SHA-256: 3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f