Malicious PDF — malware analysis report

Static analysis result for SHA-256 651655a4dd6c6d8c…

MALICIOUS

PDF

33.6 KB Created: 2021-07-02 00:41:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b7c64f389db02475110fba10763de438 SHA-1: 6fe46bc5b4088a4bcf4aeb24f919495b15fb3e32 SHA-256: 651655a4dd6c6d8c31f8c117c73d96c016944fc72748faa4c6e3ece80c75c325
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game items and hacks, directing users to the URL http://netcdn.co/app/479516143/get-free-minecraft-account-game-hack. This URL is likely to host a malicious payload or lead to further phishing attempts. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/get-free-minecraft-account-game-hack PDF link annotation
    • https://www.jcn-revalidation.co.uk/uploads/files/files/_GM479516143.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/comment-telecharger-un-hack-sur-roblox-fr_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/install-roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/village-3-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/roblox-free-robux-gratis_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/money-hack-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/skidmax-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.jcn-revalidation.co.uk/uploads/files/files/free-coin-master-spins-2021_GM406889139.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_off00003019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3019 22136 bytes
SHA-256: 11bfde06e12a7044db9b8ab14a02a5adee9957601824ad48dd47d2d41c01a132
font_01_sfnt_off000060ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EE 18140 bytes
SHA-256: e739a23bdcb2960fa4ac0fa9e12a2402f479dc79a98182c82d4b8beea09e8747