Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b3e7f360cad399…

MALICIOUS

PDF

47.6 KB Created: 2021-06-04 01:04:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3014e189d37fc8342fa7374a2c144722 SHA-1: 02e2b6862251548343e169294ff5dca23ed8b112 SHA-256: b3b3e7f360cad3992bc37b4b94072f2cae28bc5828d374b891e0df07b6fe3623
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF slugs, suggesting a link farm. The primary URL points to a 'free robux glitch game hack', indicating a lure for potentially unwanted or malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/free-robux-glitch-game-hack
    • http://library.itekes-bali.ac.id/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-no-human-verification-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hacks-iphone_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-really-hack-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/robux-free-promo-codes_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/is-minecraft-free-on-computer_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/free-accessories-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/can-u-get-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/can-you-hack-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hacks_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005323.bin
239d35801ba3addd349f63a24a21ca9a5d69fa0d4562fbcc014cf7504f95e6b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5323 25804 bytes
font_01_sfnt_off00008d51.bin
471b34484c3bee8d5bebbf3396bad215506385dbde547a2422db70e8efc075b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D51 2872 bytes
font_02_sfnt_off0000970b.bin
f765832fecc9da479c67465a8abf2ce33ee435527d5ee59b7236f6265686440b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x970B 18476 bytes

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