Malicious PDF — malware analysis report

Static analysis result for SHA-256 2779afbd01df226a…

MALICIOUS

PDF

33.5 KB Created: 2021-06-27 05:55:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 71e4448c894317812d53c5b2e05401d7 SHA-1: 6d4ab05383eaa66d491eccd587be950742a759ec SHA-256: 2779afbd01df226a685b96b4c4e067f45fa8f619b82fc829ace881b419759308
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 0.9824

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.co/app/431946152/how-to-know-if-you-got-hacked-on-roblox-game-hack PDF link annotation
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/growbux-free-robux-app_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/sword-roblox-free_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/roblox-games-free-download-for-android_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/roblox-hack-tools-download_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/hexaria-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-bloxys-arcades_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/how-to-get-1-billion-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/tutorial-avanzado-de-cheat-engine-para-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/free-adopt-me-flying-potion-roblox-codes_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn15ciamis.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-iphone_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_off00002c3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C3B 22068 bytes
SHA-256: 08fb784d927003d0bf40aaafd7c83c24519e781c67d0ab050f5275f3a2d85b94
font_01_sfnt_off00005ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE4 19400 bytes
SHA-256: 6424fa16c16a72eb36cf46e4515e773cde65618044d46fc60a2e0888cd752681

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