Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ebffcfe170c85d…

MALICIOUS

PDF

48.3 KB Created: 2021-06-10 22:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7dccb1949b849d3fdfb9dc26dd7f16e9 SHA-1: 0b86cbb6b1e1eb963e92e296eef003012b36e4f5 SHA-256: e3ebffcfe170c85da3b2f7aa359c666309818f7911d65426cb86d6191af0fab6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs further supports a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and linked content suggest it's part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/bee-swarm-hack-roblox-game-hack PDF link annotation
    • https://zd407.com/ocean_shop1/admin/upload/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/roblox-get-all-gamepasses-free_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-use-cheat-engine-66-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/hack-robux-sin-verificacion_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/real-robux-generator_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-free-spins-link-facebook-page_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
stream_004_off00005347.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5347 25792 bytes
SHA-256: 9b89e7bf4d83bd98b91a49dfc1cc29892bc534b7bdbf763d669cfcaeaf91d319
font_01_sfnt_off00008f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5C 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00009913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9913 18608 bytes
SHA-256: 0bba336071a33e2bff5ad87dd8fd998280de1554cb6b9cb895f979cb18cf55b8

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