Malicious PDF — malware analysis report

Static analysis result for SHA-256 24377aaa06b43a82…

MALICIOUS

PDF

44.3 KB Created: 2021-05-19 04:17:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4dd38550902ff0afb1b4f979a64a938c SHA-1: db8dc02d7b6e0c319bc20274fdfb8822bb937728 SHA-256: 24377aaa06b43a82104d5374b88cd129daee58e68329b85073731ab089a58767
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a fake CAPTCHA lure, instructing the user to click a link to proceed. This link, 'https://netcdn.xyz/app/431946152/free-robux-link-game-hack', leads to a malicious website. The PDF structure and embedded URLs suggest an attempt to lure users into downloading further malicious content or visiting compromised sites, likely as part of a phishing or scam campaign.

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 https://netcdn.xyz/app/431946152/free-robux-link-game-hack PDF link annotation
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/worst-client_GM479516143.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-download-coin-master_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/www-robux-us_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CD 28364 bytes
SHA-256: 057c74a04649f95cb101df79f2d14f1e02ec1882532386460dd720be6db34adc
font_01_sfnt_off00008ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE3 18304 bytes
SHA-256: a4aae99c46e0a0f586669c3aecb8c0d6e5f23962dc49b2f1654f133382ac5317

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