Malicious PDF — malware analysis report

Static analysis result for SHA-256 6daddd6d542fd815…

MALICIOUS

PDF

46.7 KB Created: 2021-05-13 13:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0beb2be315e9048840b3e2cc9931f5ae SHA-1: 39130a8a8faeaa81c4de5e826b591e1b3cd203fb SHA-256: 6daddd6d542fd815f0e4866cfadff3d3b6469599be388a23ac50e0d1cdede872
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links that form a link farm, directing users to pages promising game hacks. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs strongly suggest an attempt to redirect users to malicious websites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/how-to-duplicate-coin-master-spin-hack-game-hack
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-2021-app-download_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/free-robux-sites-that-work_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/coinmasterfreespins_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/roblox-com-free-robux_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/free-robux-offers_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-link_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-coin-master-game-2021_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/roblox-free-robux-hack_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/coin-master-shield-hack_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/roblox-fly-hack_GM431946152.pdf
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-link-today_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://library.stikeswnpalu.ac.id/repository/minecraft-pocket-apk_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e43.bin
39bf3ee607da9cc8c6d3dd8d7215720d2c71e19fe670ed93ca0bc0a9b7263a9b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E43 25484 bytes
font_01_sfnt_off00008874.bin
8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8874 3204 bytes
font_02_sfnt_off00009378.bin
63f0f1c978d8f92ee707179f18d26c907503c05d135115955c3f0d9e37ea33fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9378 18436 bytes

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