Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0e3c3ecb348684…

MALICIOUS

PDF

32.2 KB Created: 2021-07-19 23:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee1a39a2a0ccc22746912e86b8e21f5e SHA-1: c888b4cdd515f87cdd7405f2cf0f37e40ac0df97 SHA-256: 4d0e3c3ecb3486840f7901a13667cdf14534ff0b683c204bad2b74202f7494b5
168 Risk Score

Malware Insights

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

This PDF contains embedded JavaScript and links to known malicious redirector infrastructure, specifically advertising a 'free Robux generator' lure. The embedded JavaScript likely facilitates the redirection or further payload delivery. The document body and heuristics confirm the intent to trick users into visiting malicious sites by promising game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/431946152/free-robux-generator-com-roblox-hack-game-hack In PDF document text
    • https://sundae.co.th/js/userfiles/files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://sundae.co.th/js/userfiles/files/coin-master-free_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_off000029cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29CB 21628 bytes
SHA-256: 7ea17de9ba55d6c02ac5315f6fa7a05a79a06961cb8940b3e447f0e85e5d6f8e
font_01_sfnt_off00005979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5979 19036 bytes
SHA-256: e9298e23474107c7b84722852f71881d4055e6a131595fcbba005770bedde36b

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