Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ee6930b02b3e8c…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 13:54:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5bd0771aab1365938a302649688cb02b SHA-1: 55855170c8e5262be07702d0d550ab51e88e6da3 SHA-256: 05ee6930b02b3e8cf2ccf33c63c10c8739e16f49bbd820ebd8ae3a9cf77205f7
82 Risk Score

Malware Insights

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

This PDF document exhibits malicious behavior by embedding multiple URLs that likely lead to malicious downloads or phishing content, disguised as information about Roblox hacks and free items. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a deliberate attempt to trick users into downloading potentially harmful files. The document's content and embedded links strongly suggest a lure for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/roblox-hacker-skin-transparent-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/get-free-dominus-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-admin-on-roblox-mad-murderer-2_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-2021-method_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-urbis-level-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hacked-roblox-account-username-and-password_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-robux-hacks-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-speed-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-shirts-to-make-for-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/instant-hack-robux_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_off000032ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32CE 22700 bytes
SHA-256: e819a9388f3dba9c6663efaa9a5cbe9ce870b7b92ff4e29c4f00b91b172a04b4
font_01_sfnt_off0000658d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658D 19056 bytes
SHA-256: d87b30aad8127e7508ae6ca5dbbc31e4f549ce8fb22904bcc7ef86fd95868bf1

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