Malicious PDF — malware analysis report

Static analysis result for SHA-256 cec0b89ae60027cf…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 12:08:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f699883affebe6e99466d3e54b92dfa4 SHA-1: 15ceec539ce67c0718d2e42b65324b2be8ad1eb8 SHA-256: cec0b89ae60027cf7031a60b5378bbb6764b1d02a40487ef3453c29b7f4581c7
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to trick users into clicking embedded links. The primary link, http://netcdn.tw/app/479516143/free-minecraft-texture-packs-game-hack, redirects to a malicious site, indicating a phishing or scam attempt. The document's structure and embedded URLs suggest it is part of a campaign distributing malware or leading users to fraudulent websites.

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/479516143/free-minecraft-texture-packs-game-hack PDF link annotation
    • http://library.sdkmaterdei.sch.id/repository/free-robux-scam-place-download_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-item-november-2021-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-cheat-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-hack-roblox-i-dont-feel-so-good-simulator_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-hack-build-your-own-boat-ccv7_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-working-site_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-hack-filter-games-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-and-tix-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-items-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-websites-that-hack-your-account_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-by-a-roblox-code_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/groups-in-roblox-that-give-free-robux_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_off00003223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3223 21696 bytes
SHA-256: 453c3ada1490dc3c52c8325bc082fc137376ddd0026ab307bb9385848ebc02f2
font_01_sfnt_off000061b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B8 18532 bytes
SHA-256: 8f6189a23e9f62d3df147f8e0225ea745e729700ec556be14db5ff79dd0eb908

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