Malicious PDF — malware analysis report

Static analysis result for SHA-256 e43b51d94c03a81a…

MALICIOUS

PDF

40.1 KB Created: 2021-04-28 23:47:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 71155b184ecc6644179b5c6f01185a2b SHA-1: 931ba3f48d7ceab0a5c87ee50f9c8b9184c60ff7 SHA-256: e43b51d94c03a81aca207a8e88ad327f6cc75647d7c5741c4570566f1ea2d08c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure related to obtaining free Robux or game hacks. The primary malicious URL identified is https://netcdn.xyz/app/431946152/in-roblox-how-to-get-free-robux-game-hack, which is likely a redirector to a phishing site or a malware download. The presence of embedded JavaScript further supports malicious intent, potentially for exploiting vulnerabilities or downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/in-roblox-how-to-get-free-robux-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/free-robux-generator-no-survey-no-offers.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-pins-for-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-hacked-roblox-account-back.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hackers-admin-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-roblox-bloxburg-for-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-robux-legit-with-proof.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-how-to-hack-a-server.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/best-anime-roblox-t-shirt-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-copy-game-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-for-roblox-free.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_off00003ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3EA7 26316 bytes
SHA-256: 466a950d8ad27b2e3e18a51dcf4df55303e2f16c08e29a2fa093d8c141513b99
font_01_sfnt_off00007aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA1 18356 bytes
SHA-256: 02f47b24e77ed653120022e52a1c1639352842618e86daca6404eb0b9f1ab795

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