Malicious PDF — malware analysis report

Static analysis result for SHA-256 4875a11acf512fab…

MALICIOUS

PDF

36.3 KB Created: 2021-05-11 07:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a1136deb9ea68daa3eac49284b028531 SHA-1: 8583fea0f9767128ffb9682035cb817c6cad28e3 SHA-256: 4875a11acf512fabf45f58b8d05f9128e5e0cf6ddcfd2831368af871f33bf90c
130 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'Coin Master Hack' and a prominent 'CLICK HERE TO ACCESS COIN MASTER GENERATOR' call-to-action. This lure directs users to a known malicious redirector URL. The presence of a malicious redirector link and a download button lure strongly suggests a phishing or scam attempt designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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.xyz/app/406889139/coin-master-hack-online-link-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
stream_003_off0000346a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x346A 25472 bytes
SHA-256: 28e1ddb5bd219e8f6095d02e447ac5e6bf2ead2a3972c7270fa91b6767cfa192
font_01_sfnt_off00006e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E39 17788 bytes
SHA-256: fe6378a35aaddd1df9c91bfaa88201bdad89d62d9f4d299995ec0f595f057003

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