Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6c8c311d53a16d…

MALICIOUS

PDF

29.3 KB Created: 2021-07-19 20:00:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 36a2ec27c6ff10ff61fcac05256124bc SHA-1: 0c7eeebfd1e749b428af109b4379f4c5e0fb58be SHA-256: 2b6c8c311d53a16dd12fb370f848c019f8eb990608fb17a44151dea5e7123229
130 Risk Score

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/835599320/how-to-get-free-tiktok-likes-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_off000021fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21FE 22080 bytes
SHA-256: f7d2025952e1b8dc6b20d9abda2c246c5e2d6963229f451629e134385cedace1
font_01_sfnt_off000052ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52CE 17620 bytes
SHA-256: 741fb2b5b30d8c36687485fbf08913b92fc3b4be4da5bff93af7320c30ccb52b