Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0cbaee125f071ac…

MALICIOUS

PDF

33.3 KB Created: 2021-06-20 12:56:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c6027c82ca4080f93517b214ff89eed6 SHA-1: bb3504995c9b4d5aada9b219eb7d73b2ae501a78 SHA-256: e0cbaee125f071ac9f06c3fee0d498c1c1bd78ee3a61af4e2b89ee0321ad4aba
168 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and links to a known malicious redirector, masquerading as a game hack generator. The document body explicitly mentions 'Roblox Lumber Tycoon Hacks' and 'CLICK HERE TO ACCESS ROBUX GENERATOR', aiming to trick users into clicking the malicious link. The embedded JavaScript likely facilitates the redirection or exploits a vulnerability to execute a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/roblox-lumber-tycoon-hacks-game-hack In PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/when-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-get-free-robux-trur-false_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/how-to-get-free-robux-2021-ipad_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/get-free-spins-coin-master-2021_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
font_00_sfnt_off00002a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A92 22492 bytes
SHA-256: b46ebc9df7503b2fe88e753afa81ee3c43b6c9e9c9a485d0e3b9a7d0c91a8a77
font_01_sfnt_off00005ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE0 19236 bytes
SHA-256: 8801b639640dffd8ee01fc2725add229cd2a5b947024c7c9e0143a901c77b1ae

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