Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac7a4a36f1d18d7…

MALICIOUS

PDF

41.5 KB Created: 2021-04-22 15:49:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c7b89a1c2cc796bd5c632e0278f500bb SHA-1: 92f203fd975f7bf61930a08a92fd59a6671325c7 SHA-256: 9ac7a4a36f1d18d7947b940840f2a6a451c4d3d3611db1925adaba2efd92051a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'game hack' redirector, specifically `https://netsecure.pro/app/431946152/hacking-pokemon-reborn-roblox-game-hack`. This lure is designed to trick users into downloading potentially malicious content or visiting further compromised sites. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing or social engineering attack, likely delivered as a spearphishing attachment.

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://netsecure.pro/app/431946152/hacking-pokemon-reborn-roblox-game-hack PDF link annotation
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/roblox-free-download-for-computer.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/how-to-get-free-robux-100-works.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/has-roblox-been-hacked-2021-march.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-robux-real-feb-24-2021.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/roblox-weight-lifting-simulator-3-hack-download.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/how-to-hack-roblox-bloxys-arcades.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/is-roblox-hacking-illegal.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/roblox-join-players-that-arent-freind-hack-2021.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/how-to-get-the-mew-game-pass-for-free-roblox.pdfIn PDF document text
    • http://pustaka.lingkungan.ft.unand.ac.id/repository/free-roblox-robux-codes-for-robux.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004271.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4271 25992 bytes
SHA-256: e89191fa9cc80b277c5fa49ded8e83b8ce5d9e91363727f6b5ce40a8cb98760f
font_01_sfnt_off00007e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E45 19004 bytes
SHA-256: 0dfa37a82c4c1a29809d40ff1e2ebf32e10b7c2ba15178112eb7b8c8dfd885a1

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