Malicious PDF — malware analysis report

Static analysis result for SHA-256 6415b8fd39bbbeee…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 19:18:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 561e5b2cae5f84c3c863756284f6bda3 SHA-1: 69f0bbb9de871e3fcf9d2bddebbb5888091a4877 SHA-256: 6415b8fd39bbbeee95f69e0e459ad91ddc2b591a5672b896f5aea1d826b00d13
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to websites advertising free game hacks and generators, such as for Minecraft and Roblox. These lures are commonly used to trick users into downloading malware or visiting malicious sites. The ML classifier also strongly indicated maliciousness.

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/479516143/minecraft-free-version-pc-game-hack PDF link annotation
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/roblox-cheat-speed_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/tiktok-free-view-followers-app_GM835599320.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/ninjutsu-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/demogorgon-roblox-free_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/roblox-are-they-giving-away-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-robux-apps-that-work-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-robux-today-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-links-for-today_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_off00003901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3901 22776 bytes
SHA-256: fb31585aed59378f2f0abb69773c3521151ad1935d780ca5faa7aa59242e2b01
font_01_sfnt_off00006be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE8 18284 bytes
SHA-256: e0c595c1b07f3226aa41897e1f8b27f304179245479d327405418d341812ecbe

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