Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec298c08cadc0f7…

MALICIOUS

PDF

36.1 KB Created: 2021-05-13 08:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75bc805e8d2705b747ebfa01a05373b2 SHA-1: 8747194d398f0fdc760ed72bb8f670e2148154e8 SHA-256: dec298c08cadc0f76fc37f10a6199fed973a71c3e7d536d556337034a2322a95
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 pointing to a 'Coin Master' game hack lure. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-heaven-free-spins-game-hack, is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to trick the user into navigating to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0302

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-heaven-free-spins-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_off00003530.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3530 24520 bytes
SHA-256: 050c78be787299af9daa3f0284b21ce4c8df56a511f6ea42a170479034cc109d
font_01_sfnt_off00006ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCF 18000 bytes
SHA-256: 6cee86ead4aeee921a3b6e14ddf6eb594f4a141ca364aa42231f8e25adb97f4a

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