Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a1092b4edea8a7f…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 09:37:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 31a0d1159306d569c813226471ae9fdc SHA-1: 4fb875a7e581babbae3757c0f06d6857fb2d9ad5 SHA-256: 7a1092b4edea8a7f3381cd16f7e4be525fc2c98cbb7dd6fec11accef329ebc80
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/406889139/coin-master-hacks-and-cheats-game-hack PDF link annotation
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-have-free-robux-in-august-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-hack-patch-fix_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-skins-free-download-fnaf_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/khaos-youtube-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-comcom_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/injector-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-is-it-free-to-play_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-hack-a-site-to-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/robux-sites_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/click-here-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-infinity-rpg-infinite-money-hack_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/can-you-go-to-jail-for-downloading-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-minecraft-java-code_GM479516143.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_off0000322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322A 22388 bytes
SHA-256: b930fc0e18b9780ee8a8397b9120aefb4918bcd00961e06849fa56b1c083d786
font_01_sfnt_off000063dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DC 18344 bytes
SHA-256: 601959c63278e09ff7943eb84b21d4673aa029b67c6276511e759d91a2ac5937

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