Malicious PDF — malware analysis report

Static analysis result for SHA-256 f98a875759e7310b…

MALICIOUS

PDF

48.6 KB Created: 2021-04-29 07:20:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f4c018907fb04bc74ae02367372eee71 SHA-1: 3dd74282768a780ace0b2163627293dbc5759869 SHA-256: f98a875759e7310b9b83b58700e902570fca804d4184b3ad44756dccc195f6ed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

This PDF document impersonates Amazon to lure users into clicking a link related to Roblox game hacks. The embedded URL, 'https://netcdn.xyz/app/431946152/how-to-change-your-name-for-free-on-roblox-game-hack', is hosted on a domain unrelated to Amazon, indicating a phishing attempt. The ML classifier also strongly flagged this PDF as malicious, suggesting it may contain exploit code or further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/how-to-change-your-name-for-free-on-roblox-game-hack.
  • 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 https://netcdn.xyz/app/431946152/how-to-change-your-name-for-free-on-roblox-game-hack PDF link annotation
    • https://guiasderonda.es/ckfinder/userfiles/files/bux-city-free-robux.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/notoriety-roblox-loot-bag-cheat.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/free-robux-no-survey-or-human-verification-2021.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/can-you-get-unbanned-for-hacking-roblox.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/how-to-hack-roblox-free-robux-no-download.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/free-robux-february-2021.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/how-to-get-free-roblox-codes-for-robux-codes-2021.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/free-ways-to-get-robux.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/programas-para-hackear-roblox.pdfIn PDF document text
    • https://guiasderonda.es/ckfinder/userfiles/files/roblox-tree-planting-simulator-hacks-pastebin.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004418.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4418 39588 bytes
SHA-256: 641d66e4612f6f6918ac097c8baa1b35405fdf00302c401941113b3d6633da00
font_01_sfnt_off000099d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D1 19356 bytes
SHA-256: 9b38f21b90cf9fb15c8e8cc1fd63b782c64403d91223bd35e3a0c6ef3373a5ae

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