Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e668dfa1782f1d3…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 13:55:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ddca8fd0c5c2d61748957b10c6d4b4da SHA-1: 8a899c0a0634f17246a990d7720f2c2955088671 SHA-256: 5e668dfa1782f1d3fa0f705e0e41dc8d168843be3035d3a51bd40c343a1c2aea
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 0.9980

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/431946152/free-robux-without-downloading-apps-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/free-tiktok-likes-and-fans_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-download-xbox-one_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/rhow-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/sites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/exploit-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-easy-and-fast-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/appbounty-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-2021-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hacks-for-booga-booga_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-news-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/como-ser-hacker-para-hackear-a-personas-en-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_off00003013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3013 21620 bytes
SHA-256: ed8d2949776f8a8b6ae71db88b48ceba7bc70a69ea24a63a5ba9a1e538388129
font_01_sfnt_off00005f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F65 20060 bytes
SHA-256: 8436a460c804c08fe10423d7ff888b310581b803afefa6e8463990a0aaecc0a2

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