Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf19019990fd9b83…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 04:41:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e91398fa6e3f18a2f99b74af5418de54 SHA-1: 582fe2161ffb8807e2da4773f7bb133227157085 SHA-256: bf19019990fd9b832222e8b3e2d80a1995cf9c94e2e55d60fae26fdfb4647960
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a 'Mobihack Roblox Hack' to entice users. It contains multiple embedded URLs that redirect to various game-related hack sites, including one directly linked to a 'free generator / game hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous suspicious URLs supports the conclusion that this document is part of a phishing or scam campaign, likely aiming to deliver further malware or trick users into providing information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/mobihack-roblox-hack-game-hack PDF link annotation
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/roblox-edit-avatar-free_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/beastmode-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/roblox-hack-free-robux-and-tix-2021_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/where-tiktok-free-download_GM835599320.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/roblox-hack-robux-apk-pc_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/minecraft-skins-free-girl_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_off00002b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B00 23804 bytes
SHA-256: 1d4275b69edb0932fa6d90810309f1a3fd4ddd593df85f7f7513077f754a5b89
font_01_sfnt_off00006001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6001 19136 bytes
SHA-256: f16824342c62f00e4a9bb6916020d565fe0ae913315bb8cfdacdbfad2701e10e

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