Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d13ee87d354e3b3…

MALICIOUS

PDF

49.2 KB Created: 2021-06-07 08:52:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b7d274ddc40bbfa2baa9b08beacbc515 SHA-1: 21ee60f9236973f9e30491f4d51681b9252cf15f SHA-256: 6d13ee87d354e3b3056bf35c841fcc4f82d513d0c06e3083f210b7b945834349
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into clicking a malicious link. The embedded URI points to a website that likely hosts a further payload or phishing content. The document's content and heuristics strongly suggest a social engineering attack aimed at users seeking game-related cheats or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.tw/app/431946152/the-northern-frontier-script-roblox-hack-game-hack
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-game-free-download_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/my-roblox-account-was-hacked_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/pokemon-go-free-yamask_GM1094591345.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-gift-link-hack_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/how-to-get-more-robux-for-free_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-minecraft-thumbnails_GM479516143.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-robux-mobile_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/buxblast-com-robux_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-robux-by-watching-ads_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/daily-coin-master-spins_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/minecraft-free-download-iphone_GM479516143.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-2021_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-cheat-codes_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-robux-generator-no-verification_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005530.bin
5581771ef4c068fd10e5116754cf797aeed656a21dc22f1cbcf61e440e55a3f0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5530 25212 bytes
font_01_sfnt_off00008f3c.bin
63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3C 3656 bytes
font_02_sfnt_off00009bf6.bin
5b1a4fc4840b7a7fde11a7142fa726edc866259e949f837aba4a1a592744b040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF6 18912 bytes

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