Malicious PDF — malware analysis report

Static analysis result for SHA-256 699cd6ed5f82a98b…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 22:03:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: de380859f118ad516d76d0fee2bb5607 SHA-1: 4f5a9ed166723ef720c328f4b4b6464027d50095 SHA-256: 699cd6ed5f82a98be715f658b30fc2c3d7f728e19b90564fb0ce43b802a043ef
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 0.9864

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.online/app/431946152/gun-hack-roblox-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/i-caught-my-mom-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/wurst-mc_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/what-is-robux-in-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
stream_004_off000053bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53BC 25528 bytes
SHA-256: 460c54c1d5b569e8e1e9568507f8a342f8f3dd4de3d6039ff9f64c348a791ea2
font_01_sfnt_off00008f38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F38 18320 bytes
SHA-256: 7ec5d62ee69214ae7628333c3feead5abc726da431969ee6f78abe3d52a10981

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