Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeaa269f5ac2cde5…

MALICIOUS

PDF

39.5 KB Created: 2021-05-20 18:41:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8d358a4939cc0c298b59ea55ddb9a59d SHA-1: 0ba6daff88fa09dd61dbe473d52a11cf3d51e84a SHA-256: eeaa269f5ac2cde573f90fd7f0034d8130b4deeb201df7b5280c54504b000296
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a game hack lure, specifically for Roblox Robux. The embedded URLs and document body text reinforce this theme, directing users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to a malicious download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/www-roblox-com-robux-free-game-hack PDF link annotation
    • http://feuerwehr-rheinau.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/coin-monster_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-robux-codes-2021_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
stream_002_off000033bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BD 30888 bytes
SHA-256: b7bcab91da559757b82bf33ac730fc782f76546e61f1af74b15f38b1f190721f
font_01_sfnt_off00007821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7821 18708 bytes
SHA-256: c91f27fd30ec200e2a0dbd5cc88ad35776bc2371b1b59549651737de5f7a4295

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