Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a0c5438beffea9…

MALICIOUS

PDF

29.6 KB Created: 2021-07-20 18:44:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d910ebb9e6ea2e60d8643dc15ff89f18 SHA-1: e320d6f99f2d4451f76c9f4c328c80a60bf156c8 SHA-256: 46a0c5438beffea90d4f6012836fda4da44caf2f21cdbcdc09de328a5a7cc724
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically http://netcdn.tw/app/479516143/free-minecraft-server-maker-game-hack. The document body and heuristics indicate a lure for a 'free generator / game hack', suggesting a phishing or scam attempt to trick users into visiting the malicious URL. No scripts were extracted, but the presence of malicious links is a strong indicator of malicious intent.

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/479516143/free-minecraft-server-maker-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_off0000201d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x201D 22980 bytes
SHA-256: c029627433c1736a9abdaacc4964bd0e84d0f3ccde3d3ef81740966d6d0f0419
font_01_sfnt_off0000536b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x536B 17852 bytes
SHA-256: a2113846211f941d41962086a33418b46c13efddcea93467eebdb757cad7d920

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