Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c492e3b89f9e40…

MALICIOUS

PDF

40.2 KB Created: 2021-04-27 06:45:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 004d41f0f60470937298dc3f70b191be SHA-1: 698b49039fcd354006fcd577275781115c5d2b7a SHA-256: b7c492e3b89f9e4073732f4cdb6ee34247bd6e0d63e13e0a29d5e113c08c4168
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate a redirection to a potentially harmful site. While no scripts were extracted, the embedded URL and the nature of the lure suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/free-1-robux-game-hack PDF link annotation
    • http://ferienwohnung-dorsten.com/images/fame-simulator-roblox-autoclicker-hack.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/how-to-use-cheat-engine-with-roblox-games.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/cute-free-stuff-on-roblox.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/get-free-shirts-roblox-nbc.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/how-to-hack-roblox-accounts-passwords-2021.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/free-account-robux-roblox.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/robux-free-no-password.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/cuantas-hackeadas-de-roblox.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/ip-grabber-hack-for-roblox.pdfIn PDF document text
    • http://ferienwohnung-dorsten.com/images/infinite-jump-hack-roblox-download.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 1

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_off000040e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40E9 25916 bytes
SHA-256: d0742b79376159b91bc09002a01314345e24309fde51b7c51f909493ab41af33
font_01_sfnt_off00007c0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0F 18120 bytes
SHA-256: e819bd9789f1634d3b7302484ee79644ef685214e326b5a9e924010332cf0632

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