Malicious PDF — malware analysis report

Static analysis result for SHA-256 629b809db7992cc8…

MALICIOUS

PDF

36.3 KB Created: 2021-05-14 04:30:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cc21b918e44acfa5dd6e4efe179861e3 SHA-1: c800fcf18abcabfeb56131b878c1b321dadda1dc SHA-256: 629b809db7992cc8cd9845c24f4288fdf9be7bea8de82d5a13c59fa4a08dd1a9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link that redirects to a URL associated with malicious redirector infrastructure, specifically advertising a 'game hack generator'. This lure is designed to trick users into visiting a potentially harmful site. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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-daily-free-coins-link-today-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_off00003395.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3395 24944 bytes
SHA-256: a07af608b4e1f7f5f1cad9b05528c8431bedcd355327b0b00947e2a8431d868f
font_01_sfnt_off00006c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0D 18476 bytes
SHA-256: 4e997083ece3f599a87e8960a4d85608706b67604b90560f7b4d74d0b586c961

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