PDF static analysis report

Static analysis result for SHA-256 efc25d21aa1d6693…

SUSPICIOUS

PDF

34.0 KB Created: 2021-07-04 09:52:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1a923f3b7bf75e0dbfe8c08950707762 SHA-1: d7750ac10127e5599e2c9a8d3164a8991c9326b2 SHA-256: efc25d21aa1d6693951b50e06422415d700c9267d3579aba6456177339781a58
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that suggests it is a lure for downloading game hacks or cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs indicates an attempt to redirect the user to a download site. While no scripts were explicitly extracted, the nature of the content and the ML detection suggest a high likelihood of malicious intent, likely involving the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/479516143/optifine-pe-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-games-to-play-for-free-online_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-unlimited-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/pastebin-robux-promocode-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/adf-ly-hack-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/el-mejor-hack-para-roblox-marzo-2021_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/can-i-get-banned-from-a-roblox-game-for-cheating_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-pe-hack-client_GM479516143.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_off00003185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3185 22284 bytes
SHA-256: fd4e6951442dd61ce5a9fefa7d27b721851dabca69806815961e9678a650962d
font_01_sfnt_off000062d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D3 18188 bytes
SHA-256: 106e92ccf0483d7e3d6814cb7b7d47902da7918aaf1cd4cd7bc423ce2a0c5fa3