Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d54ac91de89a0f5…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 13:48:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 818a9b2b4af0c79aa99196d2bdc42403 SHA-1: 64635c8a749950a9d20c39478a290b195e2bc1e7 SHA-256: 1d54ac91de89a0f542be575ee8b474880745116cc14345f6ff56f4fe6cc0edf2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF document employs a lure related to 'Free Robux' to entice users. It contains embedded URLs and a heuristic firing for MFA/one-time-code harvesting, indicating a credential phishing attempt. The ML classifier strongly flagged this PDF as malicious, suggesting it likely downloads and executes a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/431946152/free-robux-for-kids-no-verification-game-hack PDF link annotation
    • http://cmfd.nl/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://cmfd.nl/images/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://cmfd.nl/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://cmfd.nl/images/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://cmfd.nl/images/free-free-robux_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_off0000450c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x450C 25020 bytes
SHA-256: 137868a9d2c2e84a4b92245a1975a5a0f49cf3041edf65b6359e2dc0c4d1adff
font_01_sfnt_off00007ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF1 18776 bytes
SHA-256: abcd165e4b695e85902e5e0162dd8c883b494cae8faf27dbfb1f0dc34095f980

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