Malicious PDF — malware analysis report

Static analysis result for SHA-256 12d4df8d8f5d6561…

MALICIOUS

PDF

47.2 KB Created: 2021-05-11 09:11:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 36baddbe155d9137b08c465712a6f1a1 SHA-1: aad2cc780e567228153ce8269a513a0b33ffe71a SHA-256: 12d4df8d8f5d6561a4e3b261d7202793b77b997c943db7d1fb618ad59824bf15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free currency, directing users to external URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous game-related URLs strongly suggest a phishing or malware distribution attempt. While no scripts were directly extracted, the PDF structure and embedded links indicate a potential for exploitation or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/431946152/youtube-how-to-get-free-robux-game-hack PDF link annotation
    • https://www.hotschool.com.au/images/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/robux-redeem_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/roblox-demon_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.hotschool.com.au/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hotschool.com.au/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4955 29180 bytes
SHA-256: 8ede112919c1e6218984de110b73a5b9cb4a9340143bc1f9444b2f1b7fd66980
font_01_sfnt_off00008b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7F 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00009568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9568 18444 bytes
SHA-256: 19af2615bd9086bd478ca88a6ce690b9ca3ed86297e9e30c9ccbcb4910b84991

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