Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02effbd2e6fd78b…

MALICIOUS

PDF

31.0 KB Created: 2021-07-20 08:13:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 33167e5b76f3b24b825e8d6477f3e08d SHA-1: e8f61a6c1ed47f0530f56077ffe5768cfe917b31 SHA-256: b02effbd2e6fd78bc7ba4d56191cc3e772d4e460f611eb6ecd35df6b70ef2c4c
130 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing indicating it links to a malicious redirector disguised as a 'free generator / game hack'. The embedded URL, http://netcdn.tw/app/835599320/how-to-get-tiktok-famous-free-game-hack, is the primary indicator of malicious intent. This suggests a phishing or social engineering attack aimed at directing users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.0564

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-tiktok-famous-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_off00002606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2606 22392 bytes
SHA-256: 801132ed1f0a178274c4fd4d91f6d468ef78539494fb7460a2eb314d019657a6
font_01_sfnt_off0000581c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581C 18248 bytes
SHA-256: 9d8c9ff8f23476e9e897d50e05ba1c89fe9a64794c9c08e4c2e4cb1c87253222

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