Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ff870bdcd3e179…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 18:00:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ddab76d4947e71e7055a5ca16e447265 SHA-1: c50fe0e1f6f9a3373dbcb7f9d59f7250a9480ac5 SHA-256: 67ff870bdcd3e179d4f4c32f213fb04e0deef0a2b8336904ab7bc8a2b814d80c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/479516143/wurst-client-18-9-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/free-roblox-accounts-dump_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-survive-and-kill-the-killers-in-area-51-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-roblox-collectables_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-make-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/inject-hack-roblox-code_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-generator-download-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-promo-code-generator_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-robux-javascript-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/ccv5-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-cute-roblox-faces_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-you-get-free-shirts-on-roblox_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_off00002f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 22396 bytes
SHA-256: ebb0af092c11359c4c6ee8b5544b6f640f9ff4bc89568d7560d8ef5841bc5454
font_01_sfnt_off00006130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6130 18748 bytes
SHA-256: a23ecd77200a7fb956c9aee1e1a08a0d53252202f2f85d8cee511cc2d05ab179

Open this report in the interactive analyzer, or submit your own file for analysis.