Malicious PDF — malware analysis report

Static analysis result for SHA-256 74cbb3da81063acc…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 22:05:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7026b762f93393e7401724424519bff6 SHA-1: d2cbcf318fe284f74dfdeda57656176364259bc8 SHA-256: 74cbb3da81063acc4363c2cad6ad0a0e4ec3ac36d1e565166e1e309ec2886e92
82 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free currency to entice users to click on embedded links. The primary link directs to a URL associated with game generators and hacks, indicating a phishing or scam attempt. The document's structure and embedded links suggest it is designed to redirect users to malicious websites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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/what-games-on-roblox-give-you-free-robux-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/get-free-tiktok-followers-no-verification_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/tiktok-free-views-trial_GM835599320.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-outfits-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_off00005288.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5288 28652 bytes
SHA-256: 5b6c1fd3a50ce1d870f8509a4169453ab6a5f0e79625857b1190cd386f50dc10
font_01_sfnt_off000095a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A5 19440 bytes
SHA-256: d075b9cdfa29af0d09f3a3e5cc134cf400d7d34255e3ca0094b6ab529e7e4150

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