Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc374b608d1ce79…

MALICIOUS

PDF

33.6 KB Created: 2021-07-02 08:15:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b2cb33cc6d02f1b6fd083c5e86075cd4 SHA-1: 2498485ac0430025f268583ad0e258a7de9fa3d2 SHA-256: 7bc374b608d1ce796632c0456a8460e6049e82f1ecf39994110b81053cd212b6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a malicious lure, specifically a link farm designed to redirect users to potentially harmful content. The document body and extracted URLs promote deceptive offers for in-game currency and software downloads. The presence of numerous external links, many with SEO-optimized slugs, strongly suggests an attempt to drive traffic to malicious sites, likely for malware distribution or phishing.

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-get-free-infinite-robux-in-roblox-game-hack
    • http://perpus.masda.ac.id//repository/minecraft-pe-apk-free-download_GM479516143.pdf
    • http://perpus.masda.ac.id/repository/how-to-free-robux-pastebin_GM431946152.pdf
    • http://perpus.masda.ac.id//repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdf
    • http://perpus.masda.ac.id/repository/how-do-you-finish-getting-free-robux_GM431946152.pdf
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-2021-codes_GM431946152.pdf
    • http://perpus.masda.ac.id/repository/minecraft-survival-hacks_GM479516143.pdf
    • http://perpus.masda.ac.id/repository/roblox-i-can-play-for-free_GM431946152.pdf
    • http://perpus.masda.ac.id/repository/coin-master-free-2021_GM406889139.pdf
    • http://perpus.masda.ac.id//repository/tiktok-free-download-windows-7_GM835599320.pdf
    • http://perpus.masda.ac.id/repository/fbchampion-com_GM406889139.pdf
    • http://perpus.masda.ac.id/repository/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • http://perpus.masda.ac.id//repository/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://perpus.masda.ac.id//repository/how-to-get-free-minecraft-alts_GM479516143.pdf
    • http://perpus.masda.ac.id/repository/free-promo-codes-2021-roblox_GM431946152.pdf
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdf
    • http://perpus.masda.ac.id/repository/pokemon-lets-go-free_GM1094591345.pdf
    • http://perpus.masda.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdf
    • http://perpus.masda.ac.id//repository/mcpe-master-hack-unlimited-coins_GM406889139.pdf
    • http://perpus.masda.ac.id//repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdf
    • http://perpus.masda.ac.id/repository/pastebin-free-robux-promo-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dc4.bin
175bd85a8ee66442ffe1705a4f43079f8f1723d880da45cb4726d12efd74c5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC4 21776 bytes
font_01_sfnt_off00005de4.bin
e9585cdf398ab5ee0291f2e41e7670d2fbc3c93c0d97193f6f67296fa425a63b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE4 19180 bytes

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