Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f154ade3b20a0f…

MALICIOUS

PDF

36.4 KB Created: 2021-05-21 05:08:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ffb5e3013c3bcf9882ba381a08f64113 SHA-1: 4e7dc4f10b09efc08a168ce262998271ec7685a7 SHA-256: c5f154ade3b20a0f5b7c8d965c102776a86734ebce5d4a61ecf76988b70fbe76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The document body text and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially malicious websites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/431946152/roblox-free-skin-game-hack In PDF document text
    • http://livsgnistans.se/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/earn-robux-today_GM431946152.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
font_00_sfnt_off000030c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C4 27600 bytes
SHA-256: 327fde0f70efe709c3e9fa0e757600b01f4034c608dc9b3ef6622d0a7e96964f
font_01_sfnt_off00006d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D13 18236 bytes
SHA-256: fe5c379a651f4809ca818f9833677e51b0108f9913a81e91a720280e66b9d385

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