Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a294c32497f0a9…

MALICIOUS

PDF

30.9 KB Created: 2021-07-20 21:10:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ad32bb3606c9306e54de0a2bc90b9fd SHA-1: b20b9f5da3ff50432447ad0ddb4077cac16b7674 SHA-256: d8a294c32497f0a9179d4c518b61d5b1b8a944dc3690806b3659549afb7ef472
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically advertising a "free generator / game hack" for Minecraft. The embedded URL, http://netcdn.tw/app/479516143/minecraft-windows-10-free-game-hack, is known to be associated with malicious activity. The document body also contains a call-to-action phrase, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0457

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/minecraft-windows-10-free-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_off00002458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2458 22544 bytes
SHA-256: e189edafcbb3b2d2f7356f0268fda7867a03b478ee9abc50fbf906802326acb5
font_01_sfnt_off00005686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5686 18524 bytes
SHA-256: 61f4e129dbb086a6f9797ef369c55cdd3b58d633037fca8f4f59eaf5785788a4