Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd441f2160d0036…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 01:03:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 271828309d529c16d9cfbafaabd5a904 SHA-1: cc7a882af4fda5c807b1bf72f46243caa4d9d7c6 SHA-256: ddd441f2160d0036530dc807491ca2208a394d4ab8bb8dbb03c58e1aa8d68d69
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a fake CAPTCHA lure, designed to trick users into clicking embedded links. One of these links, 'https://netcdn.xyz/app/431946152/how-to-hack-someone's-roblox-account-2021-game-hack', is identified as a malicious redirector. The document's content and structure strongly suggest it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-hack-someone In PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/block-best-robux_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/com-roblox_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_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_off00004b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B5C 26384 bytes
SHA-256: f2525c46a4848238c47959d180c3c214fd736fa81927a09c98e92228cafaca05
font_01_sfnt_off00008663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8663 19316 bytes
SHA-256: 0830f2bc2b032c7ad37be74462a8461862374830fa053aba1852b18e492c5f08

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