Malicious PDF — malware analysis report

Static analysis result for SHA-256 824bc294335daadd…

MALICIOUS

PDF

35.5 KB Created: 2021-06-30 09:06:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1145c9fedc258c206f0b44702353ca69 SHA-1: 049be930ba4d7845c8aad1bfe14db6972d93dc2d SHA-256: 824bc294335daaddffa7e0062447f32d3a49d6ed4700c71330269ea1ed36f8f0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links, identified as a link farm, that direct users to pages offering game hacks and cheats. The primary URL, http://netcdn.co/app/431946152/how-to-make-a-hacker-in-roblox-game-hack, is likely a lure to download malicious content. The ML classifier also strongly indicated maliciousness, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-make-a-hacker-in-roblox-game-hack
    • https://www.gotsolution.se/uploaded_files/userfiles/files/games-wich-you-can-hack-on-roblox_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-free-spin-today_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/roblox-hack-tool-free-download_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/minecraft-hack-client-download_GM479516143.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/is-tiktok-free_GM835599320.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/is-pokemon-go-free-to-download_GM1094591345.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/promocode-on-libery-free-stuff-roblox_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/cruise-ship-simulator-roblox-hack_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/how-to-get-free-robux-glitch-2021-august_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-dll-scripts-for-roblox_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-hack-without-verification-code-2021_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-roblox-code-giveaways_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/hacks-for-adopt-me-roblox_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/banning-hacks-for-khols-admin-house-roblox_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-robux-promo-codes-2021-not-used_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/coin-master-card-collection-hack_GM406889139.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/google-play-free-robux_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/free-roblox-pin-codes_GM431946152.pdf
    • https://www.gotsolution.se/uploaded_files/userfiles/files/https-rbxcity-com-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003300.bin
6b3848b7297c948eaa29f84360159033dcb4c96ef388cc8996452f62c430a889		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3300 22800 bytes
font_01_sfnt_off000065ed.bin
9e8b4a0410f2a814469acfdfe7d090f452d00bd124236d6fb3ac26cf2c5460fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 19016 bytes

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