Malicious PDF — malware analysis report

Static analysis result for SHA-256 6417bbb19f3f5c22…

MALICIOUS

PDF

41.4 KB Created: 2021-05-12 21:06:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d56b7a712704b9970ba884a9c22877f7 SHA-1: 0ad8f36b038cd85003fbb2b3ae9ace7471db9bb6 SHA-256: 6417bbb19f3f5c22c6e4bfaad0e2eea562d332355c8c4757f3fc3d8c01e0555f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or human verification prompt to trick the user into interacting with it. It contains an embedded URI pointing to a URL that likely hosts a malicious payload. The ML classifier strongly indicates maliciousness, and the presence of multiple related URLs suggests a phishing or scam campaign.

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-coin-master-hack-game-hack
    • https://rietenwinkel.nl/images/free-spin-coin-master-game_GM406889139.pdf
    • https://rietenwinkel.nl/images/no-human-verification_GM431946152.pdf
    • https://rietenwinkel.nl/images/coin-master-download_GM406889139.pdf
    • https://rietenwinkel.nl/images/freespinandcoin_GM406889139.pdf
    • https://rietenwinkel.nl/images/get-free-robux-without-human-verification_GM431946152.pdf
    • https://rietenwinkel.nl/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • https://rietenwinkel.nl/images/coin-master-free-coins-twitter_GM406889139.pdf
    • https://rietenwinkel.nl/images/minecraft-for-free-apk_GM479516143.pdf
    • https://rietenwinkel.nl/images/get-free-spins-coin-master-2021_GM406889139.pdf
    • https://rietenwinkel.nl/images/robux-best_GM431946152.pdf
    • https://rietenwinkel.nl/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • https://rietenwinkel.nl/images/free-spins-coin-master-2021_GM406889139.pdf
    • https://rietenwinkel.nl/images/regal-world-coin-master_GM406889139.pdf
    • https://rietenwinkel.nl/images/how-to-get-free-hair-on-roblox_GM431946152.pdf
    • https://rietenwinkel.nl/images/minecraft-win-10-free_GM479516143.pdf
    • https://rietenwinkel.nl/images/coin-master-free-cards-link-2021_GM406889139.pdf
    • https://rietenwinkel.nl/images/free-robux-no-verification-required_GM431946152.pdf
    • https://rietenwinkel.nl/images/freespinandcoin-blogspot-coin-master_GM406889139.pdf
    • https://rietenwinkel.nl/images/is-it-possible-to-get-free-robux_GM431946152.pdf
    • https://rietenwinkel.nl/images/coin-master-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492c.bin
a212e962695a6d530b369efcd2f53a537b3b907697fdb718e194220a005ed0a1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492C 24516 bytes
font_01_sfnt_off000080ed.bin
c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80ED 17716 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.