Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d95483eab2ecc8…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 16:22:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f982b19d4d7af8c8c00e36fda0706033 SHA-1: 84c84315ce21e9d935779b560bb5f7a9d76616ff SHA-256: f7d95483eab2ecc80ef5c0c9dce25cf7f76b9a113d2c5564012f389568dcd6ca
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/how-to-get-free-robux-codes-game-hack PDF link annotation
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-hack-roblox-murder-mystery_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/exploiteur-de-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-how-to-get-free-b-money-on-bloxburg_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-vehicle-simulator-hack_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-robux-online-generator_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/free-h-roblox_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/apocalypse-rising-roblox-mac-hack_GM431946152.pdfIn PDF document text
    • https://www.portalgrandeponto.com.br/public/uploads/galerias/ckeditor/files/daily-free-spins_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_off000032a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A0 22724 bytes
SHA-256: 5c4d793b561e2bebe14e7423ff5a835af6e4f48980530dd1de9b112ef88d4c5f
font_01_sfnt_off000065bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BD 19156 bytes
SHA-256: d834416b7e9185468f589fe40c9632ebbdbdfe97c28f85986fef52e4c0b1d557