Malicious PDF — malware analysis report

Static analysis result for SHA-256 b224accec6f95529…

MALICIOUS

PDF

49.7 KB Created: 2021-05-11 23:19:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 56133425dcfd30f02ae80deeb3b3d8f5 SHA-1: 2026c373dbed10617b39e5a28527f9fa7e4f25a4 SHA-256: b224accec6f95529bd546e3a6baf9f0a0ef6e2b31f76576ee6159e6f04695651
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and free currency generators. The primary lure URL is https://netcdn.xyz/app/431946152/login-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/login-robux-game-hack In PDF document text
    • http://uctovnictvosnv.sk/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/roblox-hack-unlimited-robux_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004788.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4788 26400 bytes
SHA-256: a0c6a1967a423107879d9bd1f78f4091827538d2c3e4c4fd783f1a71da841d71
font_01_sfnt_off00008537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8537 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00009259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9259 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00009f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F6B 18260 bytes
SHA-256: 4106291cd7227c0d53e90b177fe3a1aab46e5afbd3f4c663f2e449fd295445b0

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