Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd5ae7e9e0252ba…

MALICIOUS

PDF

50.7 KB Created: 2021-06-11 08:18:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4e9e7704b1f5c129118106d497971057 SHA-1: 872995994d3d2ca4babf730691eecd10c6a6a663 SHA-256: 0dd5ae7e9e0252bab1eb0c5ccdc57e97eaabccc155f4e1e638dc9917eb951aba
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link pointing to 'https://netcdn.tw/app/431946152/free-generator-code.org-roblox-game-hack', which is flagged as malicious. The document body and numerous embedded URLs suggest a lure related to 'Roblox' and 'free generator code', likely intended to trick users into visiting the malicious site. The presence of a visual download button further supports a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

Heuristics 3

  • 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 https://netcdn.tw/app/431946152/free-generator-code.org-roblox-game-hack In PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-colouring-in-free-download_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-report-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/get-your-free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/is-roblox-gluten-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/tiktok-free-views_GM835599320.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/gem-hack-kat-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/ive-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-promo-codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-100-always-working-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-police-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/girl-hair-roblox-free-watch-online_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-roblox-accounts-2021-real_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-roblox-obc-generator_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-hack-roblox-defenders-of-robloxia_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/hack-full-slot-roblox_GM431946152.pdfIn PDF document text
    • https://collectrobuxIn 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
stream_004_off00005580.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5580 26548 bytes
SHA-256: 69494eb13f4b0c5cf601021ddb944922ea972a3449c821e26c8e9e531e9de468
font_01_sfnt_off000091d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D5 4660 bytes
SHA-256: b8980cdac4d025496d9fe039d8c05bb5b9bae1b804244a1f9c05e9663db72816
font_02_sfnt_off0000a1e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1E5 18808 bytes
SHA-256: 9919d5be8db8d7170b22e8d6fda0e16b15ef442855c31d89c38ab1935d97ed39

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