Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd0479572b382fc…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 11:01:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c9ba3f7395bd7c143a68d898f54a1fb SHA-1: 925c984123e2a4c9e1ed6bdddaf433139d19edd4 SHA-256: 8fd0479572b382fcf64447f4371bb2e867bd0f18ba8ad7c02a05bee424859277
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a lure for a game hack generator, which redirects to a known malicious URL. This URL, in turn, hosts multiple other malicious PDFs, indicating a chain of malicious redirection. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves social engineering to trick users into clicking malicious links, likely leading to further malware downloads or exploitation.

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 http://netcdn.co/app/431946152/roblox-dragon-ball-after-future-hack-game-hack In PDF document text
    • https://nendientu.com/public/upload/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-hack-scripts-download_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/how-to-free-cloths-roblox-no-robux-or-inspect_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/cheats-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/how-to-be-a-vip-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/roblox-hack-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://nendientu.com/public/upload/files/minecraft-pe-hacks_GM479516143.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
font_00_sfnt_off00003239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3239 22460 bytes
SHA-256: b07cb6409318244f93dd0ec4f7e902e7229106fcf33f40e1ea0f84810dc681b9
font_01_sfnt_off00006499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6499 19232 bytes
SHA-256: 677ada7109c97bc1474c32802feae3c426fd2ecf5d017e38000276382868dd29

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