Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ef0a40d2db6384…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 22:52:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 951953af3748d8c7833b8f7b2910f1f9 SHA-1: 0d302fd2c8579a553d5c55eaac6b742817f05d7e SHA-256: 60ef0a40d2db6384018bf3a5d7f95efbd483d7b60009d9e7e14d161c30b69d36
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 interacting with malicious links. The primary embedded URI, 'https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-2021-game-hack', suggests a scam or phishing attempt related to game rewards. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/coin-master-free-spins-link-today-2021-game-hack
    • https://www.stomatoloska-ordinacija-rijeka.com/files/robux-gift-card-free_GM431946152.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/100-free-spins-for-coin-master_GM406889139.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-codes-generator-no-verification_GM431946152.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/i-need-robux_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/robux-hack-2021_GM431946152.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/roblox-hair-for-free_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/wurst-hacked-client_GM479516143.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/earn-free-robux_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-cards_GM406889139.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/bloxland-earn-free-robux_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/robuxlove-net-free-robux_GM431946152.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/how-do-you-get-free-robux_GM431946152.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/free-things-on-roblox_GM431946152.pdf
    • http://stomatoloska-ordinacija-rijeka.com/files/roblox-hack-ga_GM431946152.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-daily-spins_GM406889139.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-for-macbook-free_GM479516143.pdf
    • https://www.stomatoloska-ordinacija-rijeka.com/files/kachifpro_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b3.bin
cbdeec8de03b65e4342e2898be2ad84b032e95dcd258591cde4332c3ea3c6484
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B3 25352 bytes
font_01_sfnt_off00008226.bin
209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8226 18812 bytes