Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ebc12e5b18f4555…

MALICIOUS

PDF

44.3 KB Created: 2021-05-13 20:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1bdd153eb5af86ee3e800c03ec4fdd1d SHA-1: 7bb2cc596dc8578656e54ec8ea73d45caac5be11 SHA-256: 3ebc12e5b18f45553682785f34d57d863d61d2de9bb4fd567cbdb39df7028484
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDFs, suggesting a link farm designed to attract users searching for game-related cheats or free items. The primary URL, 'https://netcdn.xyz/app/431946152/free-robux-generator-no-human-verification-2021-game-hack', is likely a lure for a scam or malware download. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent to redirect users to potentially harmful content.

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/free-robux-generator-no-human-verification-2021-game-hack
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free-link_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-many-levels-are-in-coin-master_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/hack-client_GM479516143.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/coin-master-60-spins_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/coin-master-free-coin-hack_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/minecraft-free-no-download_GM479516143.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/can-you-play-minecraft-for-free_GM479516143.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-to-win-free-robux_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-many-levels-does-coin-master-have_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-download_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021-today_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/facebook-coin-master-hack_GM406889139.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-do-you-get-minecraft-for-free_GM479516143.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/free-robux-sites-that-work_GM431946152.pdf
    • https://learning.mansatupadangpanjang.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b44.bin
58fb783c34686c0660b38385f6143568c0e14cae2ff55111a9c4593ad861281b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B44 27148 bytes
font_01_sfnt_off000087c4.bin
cfeb00e99c7da41c79bd6814c2de1bf58f441159bdfe452787b9448ffd27beb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C4 19260 bytes

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