Malicious PDF — malware analysis report

Static analysis result for SHA-256 096b5f751a35a83a…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 01:46:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c15b0d586a5744e1767add9e5f314c15 SHA-1: 05486a76d6c7840885c7195162a29e5771304f5f SHA-256: 096b5f751a35a83aaa36cb63d4f27af36d02593ce234d43cf0352cacecdb34ad
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.co/app/431946152/free-robux-promo-codes-2021-not-expired-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/roblox-cheat-codes-for-ipad_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/login-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-login-page-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-speed-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/pubg-uc-ykleme-bedava_GM1330123889.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-things-in-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-inspect-console-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-speed-run-4-cheats_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/minecraft-bedrock-free-download-pc_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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 22372 bytes
SHA-256: 12964fa37f3c2193bab596f357d9e450ddaef97f9a1352654aadd6a21ed37990
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 20104 bytes
SHA-256: 6ac147a91636aa254d53d7af70f448725046b6bfb365639fdfbdfbe2cbb958d3

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