Malicious PDF — malware analysis report

Static analysis result for SHA-256 02eec9807860447c…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 12:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9fb8dfc7e6cab999e4ce59679d844bd2 SHA-1: 9f4eab741ba5026996ba1f85cb6782bd2354784e SHA-256: 02eec9807860447cd13821274afdddef177d198bb7965f0477421bc90d404f69
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/roblox-free-robux-com-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/slurp-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-robux-generator-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hacks-for-british-army-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/cheat-engine-kill-al-script-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-gift-card-website_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/descarga-de-roblox-hackeado-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/como-tener-hacks-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-obby-no-password_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/pokemon-go-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-music-boi-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-hack-website-no-survey_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_off00002d9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9C 21916 bytes
SHA-256: dfeeee22b38d79a66d30bb77b78ac34c5b4480aceaff8c6b7492dc4c5e05cd4a
font_01_sfnt_off00005dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEE 19052 bytes
SHA-256: 3ade0644b03576c953d7fa07027ec2051297089046835a88cadcb08e5c593426

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