Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d18ce1430f3f74f…

MALICIOUS

PDF

38.3 KB Created: 2021-05-23 19:11:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d3643006764f3eabd6f65494f3950854 SHA-1: f9ae659610a97d4e2914923518b820587c650a9a SHA-256: 7d18ce1430f3f74f839ea49e65bfe3fe6d3b0416fbc9c6fe5b7d2f2faf54779b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising 'free generator / game hack' lures for popular games. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the lure text strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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-claim-free-spins-game-hack In PDF document text
    • http://ddsadler.net/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://ddsadler.net/images/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://ddsadler.net/images/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://ddsadler.net/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ddsadler.net/images/coin-master-cheat-apk-free-download_GM406889139.pdfIn 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_002_off00003489.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3489 28096 bytes
SHA-256: 539069cf68ec88c72d0bf0741f63f0f653e3c56e6cfdc1a3525bf2f2eeb9c986
font_01_sfnt_off00007515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7515 18220 bytes
SHA-256: 4508a7247666ecd7f475af3e2510e2d7297b60fda6d209b486c2dc6be28a63e8

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