Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0e728afc81a087…

MALICIOUS

PDF

27.2 KB Created: 2021-07-06 00:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 71b8ce650f8f321270957fc6cc428f51 SHA-1: 71d411bda7da52378ad95b43701b90bb841d4131 SHA-256: 2f0e728afc81a087dfb83c99d066fca43b977516c136e709597392c20c733886
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links pointing to a known malicious redirector infrastructure, specifically advertising a 'free generator / game hack'. The document body also contains a call-to-action phrase, reinforcing the lure. While no scripts were extracted, the embedded URLs and heuristic firings strongly indicate a phishing or scam attempt designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0522

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/how-to-get-free-roebucks-without-verification-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_off00001677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1677 21380 bytes
SHA-256: 70545bb0282d7b2568f55b5a30fcc0c0e9ffeadc4b557020a06879f1730049bf
font_01_sfnt_off00004548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4548 19564 bytes
SHA-256: 9f7482f6da1ff2c580fc6fdb6711db36ab36ad0569cde63c940962ab18b633f8