Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b5f48cb884ff7c…

MALICIOUS

PDF

42.3 KB Created: 2021-05-19 14:09:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e797a9ac0b5342ad586cbf00c06e299c SHA-1: 7e6ca4bcb77c52fcb5450faf393ee747121c283a SHA-256: c7b5f48cb884ff7cc8cd04f70b3590c49e34849f668840b35444c93758e51d79
82 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains a fake CAPTCHA or human verification prompt, a common lure to trick users into downloading malicious content. The document body and extracted URLs point to sites offering game hacks and free in-game currency, further supporting the social engineering pretext. The primary IOC is the URL used to host the purported download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/minecraft-free-download-apk-softonic-game-hack
    • http://islandhopper.com.au/images/coin-master-hack-using-cheat-engine_GM406889139.pdf
    • http://islandhopper.com.au/images/hack-coin-master-2021-pc_GM406889139.pdf
    • http://islandhopper.com.au/images/coin-master-hack-mod-game-download_GM406889139.pdf
    • http://islandhopper.com.au/images/free-robux-sites-2021_GM431946152.pdf
    • http://islandhopper.com.au/images/wurst-mc_GM479516143.pdf
    • http://islandhopper.com.au/images/free-2021-robux_GM431946152.pdf
    • http://islandhopper.com.au/images/master-free-spins-and-coins_GM406889139.pdf
    • http://islandhopper.com.au/images/free-robux-no-human-verify_GM431946152.pdf
    • http://islandhopper.com.au/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • http://islandhopper.com.au/images/robuxy-com-free-robux_GM431946152.pdf
    • http://islandhopper.com.au/images/coin-master-free-spin-27_GM406889139.pdf
    • http://islandhopper.com.au/images/static-moonactive-net-link_GM406889139.pdf
    • http://islandhopper.com.au/images/coin-master-hack-without-verification_GM406889139.pdf
    • http://islandhopper.com.au/images/orewards-com-free-robux_GM431946152.pdf
    • http://islandhopper.com.au/images/roblox-admin-hack_GM431946152.pdf
    • http://islandhopper.com.au/images/roblox-font-free_GM431946152.pdf
    • http://islandhopper.com.au/images/hack-version-of-coin-master-apk-download_GM406889139.pdf
    • http://islandhopper.com.au/images/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://islandhopper.com.au/images/free-minecraft-skins-girl_GM479516143.pdf
    • http://islandhopper.com.au/images/roblox-rules_GM431946152.pdf
    • https://www.yout
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e5.bin
671229de803ff6dd2df99c8532819ad1ac69407140b3cf0621eb75eb4519fa93		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E5 25048 bytes
font_01_sfnt_off000081c5.bin
8d59af17281decbf927120d542a9fc6958c86d48fe17fe9ad1336eeca3d2c8a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 18636 bytes

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