Malicious PDF — malware analysis report

Static analysis result for SHA-256 d540c5a32383f089…

MALICIOUS

PDF

45.6 KB Created: 2021-05-12 09:35:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 940972468aaea33e2f0f408b3f7d7b2b SHA-1: 533b32256e07a61250163be96c3804a488854f36 SHA-256: d540c5a32383f0892905e9881628dd5d6e964bbd896211d885ded794808e2aba
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized links to PDF files related to game cheats and hacks. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate malicious intent. The document body, though partially corrupted, contains references to 'Roblox Mobile Hack' and URLs pointing to game-related exploits, suggesting a lure for users seeking unauthorized game advantages.

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 https://netcdn.xyz/app/431946152/roblox-mobile-hack-game-hack
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-get-free-spins_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/how-to-get-free-minecraft-alts_GM479516143.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/minecraft-free-games-no-download_GM479516143.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/win-free-robux_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/free-mods-for-coin-master_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-update-2021_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/minecraft-pe-016-0-apk-download-free_GM479516143.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/coin-master-spin-rewards_GM406889139.pdf
    • https://e-learningman12jakarta.com/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • https://rblx.land
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e70.bin
818aeae31850c701e7108617dd5862bf2db11cb5f7b38c212161ea8d4405d620		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E70 28676 bytes
font_01_sfnt_off00008f86.bin
e5e44b7d88d65c0aa39187413bdce35fa7eb26b841b7c8af9c826d312b99eefc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F86 18500 bytes

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