Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ac959c395e3b85…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 18:10:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f319199a2f9ee8e1fc823fafb3c25ed4 SHA-1: d18d1e78bc4672ccdc8b06e5a83114128e4de70f SHA-256: e2ac959c395e3b8549a66670c1eaeeb09045faf043a00d4063da12d6ce754433
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/406889139/coin-master-game-free-spin-download-game-hack PDF link annotation
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/how-to-use-synapes-roblox-hack_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/how-hack-roblox-money_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/easy-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/discord-servers-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/hack-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-robux-no-survey-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/moon-active_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/roblox-the-pizzeria-2021-money-hack_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/free-roblox-cards-july-2021_GM431946152.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/tiktok-free-100-views_GM835599320.pdfIn PDF document text
    • http://regattamaritimegroup.com/uploaded_files/userfiles/files/minecraft-cheat-client_GM479516143.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_off00002fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBC 22716 bytes
SHA-256: 9ebc97a17617876a5f91b396be08584fd883ae2913ae098c2071e8fb4d71bc20
font_01_sfnt_off0000629c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 19012 bytes
SHA-256: 17486649f648fd9bcd344c958c2e1ea953e43ba0b68fa99ca3b1e88f246af38c

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