Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e4d04de6b2ab829…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 03:15:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6045c3da1cec1e076fa79b6538174d6b SHA-1: 6a106dbe9b9985bc31e61b9f9384c3f97885f267 SHA-256: 4e4d04de6b2ab82965f1e004382f304e807b11b74fcd9e405b8636afb6e80658
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically luring users with 'free generator / game hack' content. The document body and embedded URLs reinforce this lure by advertising free Robux, game hacks, and cheats. The primary malicious URL identified is http://netcdn.co/app/431946152/adidas-t-shirt-for-roblox-free-game-hack, which likely leads to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/adidas-t-shirt-for-roblox-free-game-hack In PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/robux-generator_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-bloxburg-cheating-codes_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/roblox-item-generator-hack-that-game_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.iosas.info/uploaded_files/userfiles/files/get-free-spins-in-coin-master_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_off00003049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3049 22576 bytes
SHA-256: 7c859f474469c3c7905967938152ab2a667bc21493840d25c40fd4dfcfaac9b5
font_01_sfnt_off000062b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 19216 bytes
SHA-256: e8886d47ad5e3c64c6dab32c2e40fce4274193aa3fdc0692057471dfdf591e4f

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