PDF static analysis report

Static analysis result for SHA-256 43c97838034bda1c…

SUSPICIOUS

PDF

31.5 KB Created: 2021-06-18 21:06:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3f33771a20b682f48246e6c4a94e2725 SHA-1: 984b907b79812a7ab995b5fd77d58e9b1dac7269 SHA-256: 43c97838034bda1caafec703e46a163f596fc15e29d6d123e7c6546ca45adaa7
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a prominent call-to-action for a 'Robux Generator', strongly suggesting a lure for users seeking in-game currency. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the URL http://netcdn.co/app/431946152/instant-free-robux-generator-game-hack, which likely hosts the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 3

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/instant-free-robux-generator-game-hack PDF link annotation
    • https://www.knjigebuducnosti.com/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/robux-earning-sites_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/break-free-song-id-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/robux-app_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-hack-into-someone-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/roblox-hack-apk_GM431946152.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_off00002924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2924 21080 bytes
SHA-256: f5440b6b4792c4cce643e053f4ec57ce459b56f8f4f76dffc61d1fa61be2fb88
font_01_sfnt_off000056ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56EC 18820 bytes
SHA-256: 88604c75e10957103bbd5592023cd0cbac1855110c3316f692e4540ac23413d0