Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a84618b0d3d420c…

MALICIOUS

PDF

36.3 KB Created: 2021-07-20 04:10:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 01aae26be90e816d2925887673be58fa SHA-1: 116ccaaff818ae997cac668b92a6723d181e8277 SHA-256: 3a84618b0d3d420c2b555f753733bd6d7b7e1f796b2bb06eb40d9be55c12b3e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple embedded URLs further supports a malicious intent, likely to redirect users to a scam or phishing site. No scripts were extracted, but the document's structure and content indicate a social engineering attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-on-phone-game-hack PDF link annotation
    • http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000037d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37D1 22760 bytes
SHA-256: 33f02eeb5473d653fc571ff20ed0f6f6ab05124b124d0b19a32a5ce12ede8a6d
font_01_sfnt_off00006ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC8 18788 bytes
SHA-256: 6852338db6f3c7567e169710b83fedb5698b09b1cf918a35efe09c4db198a139

Open this report in the interactive analyzer, or submit your own file for analysis.