Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe46e758b4acc7f…

MALICIOUS

PDF

35.6 KB Created: 2021-05-12 08:37:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e96db7e32a67eb1cfa2a38b0a14ae59 SHA-1: c8eec2dad667789493bd6f6ccd875ba828656b0d SHA-256: 3fe46e758b4acc7f816ec61b8ed4591c9c3279ae9ecf54b22a090cc438085327
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious URL, disguised as a 'free Robux hack'. The document body explicitly mentions 'Free Robux Hack 2021' and includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a phishing or scam attempt. The presence of embedded URLs and the lure suggest a social engineering attack aimed at tricking users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0553

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-robux-hack-2021-game-hack In 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_off00002fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC2 24644 bytes
SHA-256: 9efa4127aa9d5cb9c3bd3c3cd080047d56dc9029f04e0e2bc335818a3793c12a
font_01_sfnt_off00006832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6832 18816 bytes
SHA-256: b2e74e066e927f416452387fe7118a02e4882588ce64a473b0bf6318b488dee0

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