Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0a00e62956a952…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 16:18:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6769971496532ec4e8594d21864c005b SHA-1: d5af0f030cf67182c8e43893c7e9d6eb9746d2cb SHA-256: bb0a00e62956a952ba7f747b47a572882cf4a9a8111e0686dd0e688ac2b98696
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/free-robux-kid-friendly-no-human-verification-game-hack PDF link annotation
    • https://www.failtesolar.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/hitbox-resizer-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/roblox-champl-dll-hack_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/how-to-get-free-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/como-hackear-cuentas-de-roblox-sin-programas_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/blox-rewards_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/google-how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021-july_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.failtesolar.com/uploaded_files/userfiles/files/free-roblox-codes-unused_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_off0000338d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338D 23076 bytes
SHA-256: 1173e931581c7210b12d7967d195291246854a1c077d0af4952860fba98c9a86
font_01_sfnt_off00006747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6747 19760 bytes
SHA-256: 81aab0412cfb0a87b1895216bf4af503bb533c0e0c6228ebd3d86b300273636c