Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf4383eeb0e2a00…

MALICIOUS

PDF

33.8 KB Created: 2021-07-04 00:48:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1d70040bee52836642fda0ed6c371be2 SHA-1: 3c61c72b445de47a56c217321de8542cb5350a49 SHA-256: eaf4383eeb0e2a004952891c293e80086784055047aacfa6afbfe22afc4b8793
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/hacked-roblox-accounts-list-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/brand-new-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-robux-no-hack-no-scam_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-shirts-in-roblox-catlog_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-shionbi-life-max-lvl-hack-robloxdailt_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/pubg-uc-center_GM1330123889.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-hack-that-makes-you-turn-into-flying_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-are-people-able-to-cheat-in-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-roblox-com_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-songs-music_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/near-tiktok-free-fire_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-link-2021-app_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_off00002f11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F11 21664 bytes
SHA-256: fdad19f61beca1fc68536173723d55f65961ebbb96b9aa684178bb27efef8fea
font_01_sfnt_off00005e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E94 19196 bytes
SHA-256: 381610bbab0b7b31e380a7a4918c50b3e30c1fbe9436aeae15edec1864da4a24

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