Malicious PDF — malware analysis report

Static analysis result for SHA-256 d121d8d8aa7087dd…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 19:58:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3c54d7c6157369b207f312d8e80d4cea SHA-1: 2c02793cd1c1f3163057b2e276a0bc2863b29b21 SHA-256: d121d8d8aa7087dd045b6b431a852c84d974199c47474a3c775c4913e168517d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of offering game hacks and generators. The document body and heuristic firings indicate a lure designed to entice users to click these links, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a phishing or malware distribution attempt.

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/noclip-hack-on-roblox-game-hack In PDF document text
    • http://atrax.hr/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • https://www.atrax.hr/files/hack-event-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://atrax.hr/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/brdarski-roblox-inspect-element-hack_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/cheat-code-sonic-new-map-roblox_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00002eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 22032 bytes
SHA-256: f830569c60ad98b88bcf7c6ae1dd9efe47903e68d04cfd62529d8b13a658279d
font_01_sfnt_off00005f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 18952 bytes
SHA-256: 04182cb2a774582c0c66c5c1138db50e00005f1f945041066bf4ea3342666928

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