Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e1b53c41f70e2a…

MALICIOUS

PDF

33.6 KB Created: 2021-07-01 20:29:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4db5ffa9831cd98a6da3be3ba4f60037 SHA-1: 55c3a5e53e50d02c31eae72e1afcb3e8741360a4 SHA-256: 03e1b53c41f70e2a2685fd57e5108698192a3d0691b0bcd871ee11d1f5833842
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.co/app/431946152/roblox-imagine-game-hack PDF link annotation
    • https://adirp.id/upload_data/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/clickbait-free-robux_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_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 22248 bytes
SHA-256: 9088be67482ab9166e8b0c6183d48a08da9d6eac01fc3350a9e6c3314d941c0f
font_01_sfnt_off00005eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EED 18864 bytes
SHA-256: ea4d1e0d66ed511fdb3ea7ada25a2e13094c253047fc11979a144078ebcd1e51

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