Malicious PDF — malware analysis report

Static analysis result for SHA-256 002aada1000878d1…

MALICIOUS

PDF

46.9 KB Created: 2021-06-08 16:27:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c7d9702b81142da7704ed965e78d5079 SHA-1: a9f8bc117742c6e07fea438da2c55cf95df13e67 SHA-256: 002aada1000878d17ea66537d2372ccf51bc8976a333b0047e7d2fae099e3172
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 0.9832

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/how-to-use-cheat-engine-to-get-robux-game-hack PDF link annotation
    • https://zd407.com/ocean_shop1/admin/upload/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/how-to-change-your-username-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://zd407.com/ocean_shop1/admin/upload/files/apps-that-give-you-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
stream_004_off000050f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F9 29132 bytes
SHA-256: 81fbc3ddc98b34d0766934b091aeca20493b521cf27841c217e1545372fbda6e
font_01_sfnt_off00009256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9256 19104 bytes
SHA-256: 94c75e75db7f0c17d9aa38de8d8a7e9e23a22fe596a293f5cb5b40b9ea7ef579

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