Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef0f210985aff39…

MALICIOUS

PDF

35.7 KB Created: 2021-05-12 11:17:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f7ab936752d70253c9c11729cdd1eb07 SHA-1: ae321c216ab83a55f1ff1837f022b39e99e127f8 SHA-256: 2ef0f210985aff397f736c0c4495461cc398b9e7a09fb53603b9922a5d41c90a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a lure for malicious redirectors, specifically advertising a 'free generator / game hack'. The embedded URL, https://netcdn.xyz/app/406889139/is-coin-master-free-game-hack, is flagged as malicious. The document body also contains this URL and a call-to-action phrase, reinforcing the phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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/is-coin-master-free-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_off00002fc3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FC3 24580 bytes
SHA-256: 3195aea29613b752ac66b1c11b6081b946e911eaa148c05f190df2a7cb47ce8d
font_01_sfnt_off000067a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 19040 bytes
SHA-256: 7f779385cc162b4503ad9bbc3183a78f3fdb8e5497a875a7ac1e9bd5f1f4661b