Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d41b1cf4c6a193…

MALICIOUS

PDF

28.8 KB Created: 2021-07-21 20:34:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2e8f1cc015def3a106fb9fe3b506d042 SHA-1: 4e1611611c8d1407303aa7aad08d9a99eb3ce621 SHA-256: 32d41b1cf4c6a193f8be90a47fa2fd860ed6b33b4b4092b1c98f9209c9f8ac31
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a lure for a game hack generator, linking to known malicious redirector infrastructure. The embedded URL, http://netcdn.tw/app/479516143/minecraft-free-download-chromebook-game-hack, is identified as malicious. While no scripts were explicitly extracted, the nature of the lure suggests an attempt to trick the user into downloading or executing a secondary payload, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier clean score 0.0373

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-free-download-chromebook-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_off00001d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D9A 21540 bytes
SHA-256: 60f44979d0af0b32264e26a43d1113ff59d2d94c2976419e15ddb8e6e4de73d9
font_01_sfnt_off00004cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CBA 19044 bytes
SHA-256: 5dd9560c2144c6e0c163b4f028c4225137fae20b1a5cdfb52854f5b1068f3385

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