Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c684e99d26e74a3…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 19:12:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e4d307dee4a24e45bfdf638bfd5418c1 SHA-1: ec58daa07e5aaef2f6dcf055ea8a5318f6fcb878 SHA-256: 5c684e99d26e74a306772eb7e63cbf0bd25b9bf982e5f6be90d7f22a086e70dd
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.tw/app/431946152/roblox-free-download-pc-windows-7-game-hack PDF link annotation
    • http://perpustakaan.iahntp.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/roblox-builders-club-hack-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/brdarski-roblox-inspect-element-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-using-tampermonkey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-hack-any-game-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/vermillion-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-hack-a-player-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/get-robux-for-freecom-on-computrt-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/how-to-get-unlimited-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-tv-series-roblox-shirt_GM431946152.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/speed-hack-easy-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/free-robux-generator-no-verification-2021_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_off00003174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3174 22244 bytes
SHA-256: d58da4ae89cd2cc9eb961afcc1aa3cb22849097212f493aa8b087161af878860
font_01_sfnt_off000062d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D3 19500 bytes
SHA-256: 6d3aa371465d64a1c5ff890423b9878bb6f5721eff98f93ee1a7b78f1e072fff

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