Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f022c72068cb76c…

MALICIOUS

PDF

30.1 KB Created: 2021-07-21 16:03:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4fb11b61c7c94b8b9e54bf17db5008d5 SHA-1: 2f464e824cfc6d94660c218958cf8d01b761f2dc SHA-256: 1f022c72068cb76c1d11a12fc1752286100c9afeb2000ebcc6aa0b056c22de0d
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text explicitly advertising a "Roblox Script Hack" and "Robux Generator", directing users to a malicious URL. This indicates a social engineering lure designed to trick users into downloading potentially harmful content. The heuristic firings confirm the presence of malicious redirector links and a general lure for game hacks.

Machine Learning

  • Nyx PDF Classifier clean score 0.0556

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 http://netcdn.tw/app/431946152/roblox-script-hack-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_off000020a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20A7 22408 bytes
SHA-256: f499e2bc4e3b6dd51d487b8455ee3cc3420df855cb2220e0c0c0db247ae7693b
font_01_sfnt_off00005278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5278 18768 bytes
SHA-256: 7659c4a733e4da23e1d7e65f2ca3ce78126b1a261841e92e3ef75f6514f379ce

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