Malicious PDF — malware analysis report

Static analysis result for SHA-256 458cd41286327a80…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 10:44:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b730a53c37b77d2c8fa91c5b573d5897 SHA-1: e09bf073fdf0c6549e56dcd83724b32048771051 SHA-256: 458cd41286327a808511f0a6f940ac4eb101d07f2531d14b44469992e757197c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a redirector link that leads to a "coin master free spins daily game hack" lure. This is further supported by a heuristic indicating a visual download button. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-daily-game-hack, is the primary indicator of this phishing attempt, likely designed to lead users to a malicious site or download further malware.

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

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-free-spins-daily-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000356f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x356F 24152 bytes
SHA-256: 3122234e7acf0abe3eaca54ffa6816894423f932fcb351bce30463b9fac72326
font_01_sfnt_off00006c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C91 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00007a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A31 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00008420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8420 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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