Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ec8fba36cca76e…

MALICIOUS

PDF

36.7 KB Created: 2021-06-25 16:25:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0b97d549866ed5613a02ace8224f4521 SHA-1: 3d4596b272e39c4e63e184bd60cefbf96742d9a0 SHA-256: 05ec8fba36cca76e1ea7bd1d0f80c53d42cbbc76372b7b6e7bc1c0cf5302bf06
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/431946152/2021-unpatchable-how-to-noclip-hack-on-roblox-game-hack PDF link annotation
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/minecraft-net-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/wurst-commands_GM479516143.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/pubg-uc-gift-card_GM1330123889.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/tiktok-free-book-website_GM835599320.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-email_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/join-my-roblox-group-for-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/free-codes-for-assassin-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mansapa.sch.id/__statics/gudangsoal/files/robux-download_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_off00003491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3491 22912 bytes
SHA-256: 37a7cf8c7a4a839a479b1bcf4e24ff7407c8183116f28cf0d671cc9a79445402
font_01_sfnt_off0000683f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683F 19788 bytes
SHA-256: 2acfbed2c2289f4d05a9ae10db240f856fa5084b8a23efa75ecb31f851c25d99

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