Malicious PDF — malware analysis report

Static analysis result for SHA-256 33a81b6391932c4f…

MALICIOUS

PDF

46.8 KB Created: 2021-05-11 12:36:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e17db28d381913f86e0fa8108726c18f SHA-1: 043bad0aaa0c3a283ef0bc4652303e9089d556f3 SHA-256: 33a81b6391932c4f10b5c2376af748a20aa67c3695d5dfc210ba371330a8b7ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising 'game hacks' and generators. The primary redirector URL is https://netcdn.xyz/app/431946152/www-rbxhut-com-game-hack, which is associated with known malicious redirector activity. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/www-rbxhut-com-game-hack In PDF document text
    • http://seniorenverband-brh-nds.de/images/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7B 25704 bytes
SHA-256: 18f8425a1533a302d887250531f9ed1d916da90a5593fdaec1405ee0d9fba3c4
font_01_sfnt_off000085e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000092f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F5 18740 bytes
SHA-256: c40c2a800db1b505b22aba2fb21bf8015c7bbf3e0626fd9ba099bd74567bfb49

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