Malicious PDF — malware analysis report

Static analysis result for SHA-256 33039897f04094a3…

MALICIOUS

PDF

41.4 KB Created: 2021-06-09 00:56:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e7e571ec42eabb17b8a978245281b837 SHA-1: 7ebec688814adccd15fa78338152fed621af7e39 SHA-256: 33039897f04094a3691974893a7370c165c8585fa4aac3b9b11285897024a9f9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, linking to a known malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL. The presence of embedded fonts and the use of wkhtmltopdf suggest a potentially crafted document designed to exploit user interest in free game cheats.

Machine Learning

  • Nyx PDF Classifier clean score 0.0284

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 https://netcdn.tw/app/431946152/base-wars-health-hack-roblox-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BAE 24184 bytes
SHA-256: 4bede94b93787da070e73a0a1633aed75d1a95a6b4015b55ea2a7924089477ef
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 3560 bytes
SHA-256: 7adf3ecb2acc78bd8357c076bbb63f29c6bbfa21040d6a8d32266072fd69d550
font_02_sfnt_off00007ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBC 18648 bytes
SHA-256: e03bcd739dc668ed379e8a9ed56e414c558ff7d063f9b634377aaf4ac228af2d

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