Malicious PDF — malware analysis report

Static analysis result for SHA-256 59df7384b3f93e35…

MALICIOUS

PDF

36.2 KB Created: 2021-06-24 22:22:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 56e55c9fdb239caf921f82f37b9705ba SHA-1: 56707a441eb7152f9166af7ae94507d3523e9e42 SHA-256: 59df7384b3f93e35cd677ebb91589f44e688e872db4965abd2025268d44a8bf3
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick users into downloading a payload. The embedded URL points to a potential download location for this payload. The ML classifier strongly indicates maliciousness, and the overall context suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-studio-don PDF link annotation
    • http://apartstmichel.com.ar/images/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/how-to-get-free-robux-with-fake-credit-card_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/roblox-but_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/get-more-robux_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/free-tiktok-fans-no-verification-2021_GM835599320.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/mathep_GM431946152.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://apartstmichel.com.ar/images/dl-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3345 22432 bytes
SHA-256: 938a6a573c9b3ba2611130d878827f3a527fa7e2c2a4011c8d81ce1bb2e065b9
font_01_sfnt_off00006517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6517 20300 bytes
SHA-256: ba00fa76f18a88bf38e04c4b410d4c0c68849a34303f3eed9f5b573ccda5a0ac

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