Malicious PDF — malware analysis report

Static analysis result for SHA-256 06d1816b33599c52…

MALICIOUS

PDF

50.4 KB Created: 2021-06-03 08:45:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bffbc004ae99af468c692e1131044b2f SHA-1: 1a1b9c86fd7a8c425bb105d918cba42db9fbc26d SHA-256: 06d1816b33599c522db3d46712375b8d7ba0fc2b57d5508a221e3f9c31667aee
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 0.9769

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 https://netcdn.online/app/431946152/how-to-change-roblox-user-for-free-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pokemon-go-free-100-iv-map_GM1094591345.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E8 29472 bytes
SHA-256: 476620c29931d6542d5e12764d203af14fab3ad2d278811927f5c24edf1a00fa
font_01_sfnt_off00009350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9350 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA062 18980 bytes
SHA-256: 1d07b8fa27ecdfbc928dd919c9762162e400d5eb22d15e0be02251133fa98650

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