Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf3caa351a5816c…

MALICIOUS

PDF

29.6 KB Created: 2021-07-18 22:58:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 361ba502f18f6e5db77bdb14185f873d SHA-1: d42c7c8239140bbcc60a94ea76292727e436682b SHA-256: aaf3caa351a5816cc64930a53ceeb4891238dc6ee7da79619d136e1693695a8c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The embedded URL, http://netcdn.tw/app/479516143/minecraft-windows-10-edition-free-game-hack, is associated with malicious redirector infrastructure. The document body and PDF facts indicate the file is designed to trick users into clicking this link, likely to download a secondary payload or lead them to a phishing site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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-edition-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_off00001fed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FED 22352 bytes
SHA-256: 86022619a41923b4d10a60e973a727c5f32e1df2e5a252cf8494b1563311f71e
font_01_sfnt_off00005163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5163 18524 bytes
SHA-256: 0bf31bed13672a3e0ec3830f17f3a108a804d8b157495bd7936eaddb95c84b8e