Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8777f272ec0b143…

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 04:07:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d897b2fa74f58dd229b05a51c13bf9f7 SHA-1: 0420505ebc5698df55708c23c2aadbc0bec45fd4 SHA-256: c8777f272ec0b143b9afe6360788924ffbcf645a9f512999e4baa53f23f0e4b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF with high confidence. The document body and embedded links suggest an attempt to lure users to external sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-get-free-robux-app-game-hack In PDF document text
    • http://newbeginningsranch.net/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/robux-xyz_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/robux-sites_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004937.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4937 28416 bytes
SHA-256: 3196d5c96159d0bcaa9ae65d90d2faa8313a2aa869d1b753db71cf1f6a0ad229
font_01_sfnt_off00008a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A14 18460 bytes
SHA-256: 9b29575604d2c2a5900261a35c88052e604744084870fcd9fc708b4f32deccf1

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