Malicious PDF — malware analysis report

Static analysis result for SHA-256 750936db7024354b…

MALICIOUS

PDF

47.8 KB Created: 2021-05-13 08:33:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cce84989d4eb30c4b929fb5f60200dc5 SHA-1: 2c5a8e6fce8624442402e32e0168a049d37d56f5 SHA-256: 750936db7024354b707b3c79954905265d5093ad2ce22b92b9df91a090618cd1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures for game hacks and free generators. The primary malicious URL identified is https://netcdn.xyz/app/431946152/buy-robux-free-game-hack, which is linked to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/buy-robux-free-game-hack In PDF document text
    • https://hotelyetihome.com/userfiles/files/static-moonactive_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/robux-link_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://hotelyetihome.com/userfiles/files/how-to-get-more-spins-on-coin-master_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DA 31516 bytes
SHA-256: 02958bc8aa3d3a449c0e1c7f01f5a9f4bcfbee6522781c3fc32c33865b4c9411
font_01_sfnt_off00008eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB0 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_02_sfnt_off000098c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C1 18196 bytes
SHA-256: cb12c4d5dde36c76c1d8ec5571b03ead83a0fa8ffdaffe515056ff0ebc75f1e1

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