Malicious PDF — malware analysis report

Static analysis result for SHA-256 575440832b5e37cb…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 02:51:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: cfb3a28e2642b4b47116300ce20fac78 SHA-1: 4deec86e81780dc7c4857e1395bdfde933185241 SHA-256: 575440832b5e37cbb87d8b1df5afc548bee019d369cff1053c5a980288185fa5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/431946152/rbx-place-free-robux-game-hack. The document body and numerous extracted URLs reinforce this theme, focusing on game hacks and free currency for games like Roblox. This suggests a social engineering lure to trick users into visiting a potentially malicious site.

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/rbx-place-free-robux-game-hack PDF link annotation
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-roblox-injector-v3rmillion_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/roblox-free-account-searcher_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-kakashi-outfit-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/roblox-booga-booga-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/robloxplay-game-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/roblox-play-paid-games-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/roblox-hack-gg-uardikan_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/how-to-level-up-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/does-roblox-ban-people-for-hacking_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/roblox-cheats-for-xbox-one_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalmuhajirindps.sch.id/__statics/gudangsoal/files/roblox-online-free_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_off00002e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E84 21928 bytes
SHA-256: 36138a26191e6f645bf52dd60f2358914ce811f0dce8863b7d22863c71dd4b77
font_01_sfnt_off00005ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 18944 bytes
SHA-256: 9547c61a541b439506bd5b7b0d184b57908b992205896235b1a4d0c80bc97bcb

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