Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd91e511e083b003…

MALICIOUS

PDF

37.0 KB Created: 2021-05-23 13:41:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2b2930c0aedb56aef5ff093c5b3cc743 SHA-1: ab6630a8bcddad9fe6160a79644bff19a8e4e056 SHA-256: fd91e511e083b003d93d2064a84458e3a957d8957e9be4928ba2b4d166905aca
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to hacking game accounts and provides links to external websites. The 'ML_NYX_PDF_MALICIOUS' heuristic and the presence of multiple suspicious URLs indicate a malicious intent to redirect users to potentially harmful content. The document body explicitly mentions 'How To Hack Roblox Accounts 2021 Easy' and includes a call to action to access a 'ROBLOX GENERATOR'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-hack-roblox-accounts-2021-easy-game-hack PDF link annotation
    • http://www.donjastubica.hr/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.donjastubica.hr/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/roblox-g_GM431946152.pdfIn PDF document text
    • http://www.donjastubica.hr/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.donjastubica.hr/files/coin-master-free-blogspot_GM406889139.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
stream_002_off000032c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32C7 24920 bytes
SHA-256: ecf628b6b6ee2b41cf3a7198d1f5b58fcfd3b94eb9d00f54770f8977c979320d
font_01_sfnt_off00006c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 19172 bytes
SHA-256: 0a4c192dd0d49b475d670e2028b2e3d9bc88486e58824ff416e2d46c0acce708

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