Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfc096fa2ec59e5…

MALICIOUS

PDF

51.3 KB Created: 2021-05-14 03:19:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2687266add1437f306094b65f5ec5619 SHA-1: 8d1fe51eebfce216e8c31a033db1f625a660b911 SHA-256: 2dfc096fa2ec59e5ca233ff233483672b88e9ec887be72a9301761117ae6961d
168 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links to known malicious redirectors, including one specifically advertising a "free robux only username game hack". The ML classifier also strongly indicated maliciousness. The primary URL, https://netcdn.xyz/app/431946152/free-robux-only-username-game-hack, is likely used to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/free-robux-only-username-game-hack In PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://www.micIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D00 32252 bytes
SHA-256: 89b394f8ccd69e6b2c11277d50dcd87e0bc6fa0124d50965f11f6a746f6c076b
font_01_sfnt_off00009785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9785 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA496 18944 bytes
SHA-256: 70265b1ab56d97b784f4fe2fa404654962f548e46b6ffa550f521079ee450d9c