Malicious PDF — malware analysis report

Static analysis result for SHA-256 98aa578762c64900…

MALICIOUS

PDF

38.9 KB Created: 2021-05-30 05:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cd34b7904f699895e44053b081ccf181 SHA-1: 0964a58f71dc36b72a5b5d45f127eb5cb015ca03 SHA-256: 98aa578762c649009542cbb12a8c69f06c2b44f49b2e3b659f44218823a0f9cd
82 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it displays a fake CAPTCHA or human verification prompt to trick users. It also contains an external URI pointing to a URL that appears to be a lure for game hacks. The document body includes text related to 'Coin Master Free Spins' and a 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' call to action, further supporting the social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/406889139/coin-master-free-spins-and-coins-blogspot-game-hack
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdf
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/coin-master-free-blogspot_GM406889139.pdf
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/hacks-to-get-free-robux_GM431946152.pdf
    • http://www.alnafeesholding.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003393.bin
bace1a12e57947d16c36c951e04ea1e3ebf4cb26f4afd4817d2ecccb3ea9384f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3393 24732 bytes
font_01_sfnt_off00006bb8.bin
381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB8 2824 bytes
font_02_sfnt_off0000755a.bin
0f54115b9972647639797d248389657ce322f7c5c12f639c73d71ff235a73201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755A 18636 bytes

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