Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bce21bcbe266dc4…

MALICIOUS

PDF

29.2 KB Created: 2021-07-21 01:42:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b1a05d99e3929670749cd9e2dd7dc94 SHA-1: dd6a6106a094d07ecb21a2383e753996aae20d08 SHA-256: 0bce21bcbe266dc48b66d2a3d57f5e0ef0afce710ec35c524aa38d520ec3cdbd
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' related to TikTok accounts, directing users to a suspicious URL. This URL is flagged as a known malicious redirector, indicating a phishing or scam attempt. The document body and heuristics confirm the presence of embedded links designed to trick users into clicking through to potentially harmful content.

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/835599320/free-tiktok-accounts-with-followers-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_off000020ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20AE 21832 bytes
SHA-256: 9630f130146b82d4fd56c4a907b27c2c117210f6acd41879f416ef362e9a16a7
font_01_sfnt_off000050fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50FE 18200 bytes
SHA-256: 00ff3188f7c2cc6f3bb1e48311a72fd536e799d3f1f3caf1b59355958851fd7e

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