Malicious PDF — malware analysis report

Static analysis result for SHA-256 05bea1c2817f877c…

MALICIOUS

PDF

51.4 KB Created: 2021-05-10 10:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 295e3f4eb4518ef438610d951bcd674a SHA-1: e23cb83092e94a5c3ba22882d9c0f8a4fcf6d667 SHA-256: 05bea1c2817f877c667c047061a52a49ca320bf06bec1d220a190b9e025cc63e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically a lure for a 'free generator / game hack'. The embedded URL leads to known malicious infrastructure. While no scripts were extracted, the document body and heuristics indicate a phishing attempt to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0145

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-spin-hack-without-verification-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000389c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x389C 27200 bytes
SHA-256: 4787f1e897e27ea92bcaa0a859ad1ce3201050062797fcb34b64d53d564cef64
font_01_sfnt_off0000778d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778D 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00008258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8258 9036 bytes
SHA-256: f5842ef8f016b58b62e6413fdf0e28ff6252d153ecd04ca9092930ae5e02dab6
font_03_sfnt_off00009874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9874 18528 bytes
SHA-256: bf3f764869c6a31c5cda1c047c35a78fe470abce066a28f55ed89f494fef0fb5
font_04_sfnt_off0000bb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB33 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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