Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b677cc8919916a…

MALICIOUS

PDF

46.7 KB Created: 2021-05-11 02:03:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e5a208d39288e53b4784d04a5e7ea021 SHA-1: 954c52e8f158069eecc6ba3ed9dd23d068ce21a7 SHA-256: 93b677cc8919916a7eb7dbde6fb98373fe3d2d90ff2e1d79d681734797ba94fa
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are SEO-optimized and point to pages offering free game-related cheats or hacks, such as 'free Robux'. The presence of a visual download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or downloads. The document's structure suggests it's part of a link farm designed to attract users searching for game exploits.

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/431946152/free-robux-without-verify-game-hack
    • https://www.das-partners.com/uploaded_files/userfiles/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-win-free-robux_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/coin-master-hack-no-human-verification-2021_GM406889139.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/minecraft-xbox-one-free_GM479516143.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/hack-coin-master-using-cheat-engine_GM406889139.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/real-robux-codes_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/roblox-hack-com_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-get-free-robux-youtube_GM431946152.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/legit-coin-master-hack-october-2021_GM406889139.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free_GM479516143.pdf
    • https://www.das-partners.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c1e.bin
47f94ae2711bfac35a9c6c9be06525328691b4cf9b3e009d507ae206decb41ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C1E 24972 bytes
font_01_sfnt_off0000851e.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x851E 5696 bytes
font_02_sfnt_off00009230.bin
511fbd4ba16aacf51779f52d01f2fc894dffaba514ce449b994b41b42032bc0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9230 18916 bytes

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