Malicious PDF — malware analysis report

Static analysis result for SHA-256 1715df57bb57966c…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 08:46:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5d6919118af4b3484b4ca56ef55bec66 SHA-1: d04cc8b9db3f26574c58522df27cacd8ba47f2cf SHA-256: 1715df57bb57966cbad8619e075a29879efa888af2a4d7a224642358a8a06b85
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, designed to trick users into interacting with it. It also embeds external URIs pointing to websites offering game hacks, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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-haktuts-game-hack PDF link annotation
    • http://www.visiblefilm.com/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.visiblefilm.com/images/coin-master-hack-pro-gamers_GM406889139.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
stream_003_off000049a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A3 24776 bytes
SHA-256: e5b9eba4760ab11c576fbff8136f184b93ea13ce7b93270e28c41031cab53793
font_01_sfnt_off000082a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A3 17856 bytes
SHA-256: 75071ac62cf1f8e63970abc485880b2afc9ed082c679e94b51aa601dbd55dd98

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