Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a0ae177c64a52b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 20:18:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4c330a3c4f324b28a8cc01dc53d3a0a8 SHA-1: 92b9c00896a3f7e47de75c1b7031350af890b2f1 SHA-256: 03a0ae177c64a52b9a75b6049e69126659deb32ba8101705bab5e5c63f4ae618
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/479516143/how-to-make-a-minecraft-client-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-without-personal-info_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-account-with-ultimate-driving-cars_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-accounts-2021-rich_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/shirt-roblox-template-free-shipping_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-hack-siteleri_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/adopt-me-roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/descargar-hacks-para-roblox-2021-con-fly_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-stuff-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-teasure-hunt-simulator-hack_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/facebook-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/walk-speed-hack-roblox_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_off000035be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35BE 21760 bytes
SHA-256: 4c76f604a62db2fda1bc5903b451aa9422fb0dd535f3a37144593352102f7f59
font_01_sfnt_off00006535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6535 18408 bytes
SHA-256: 03295cd4a5569e9f8ae37183c20a7c8b763471bbe644b379d72bcd702fe4c2ec