Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d83da55105118f…

MALICIOUS

PDF

41.1 KB Created: 2021-04-23 18:04:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a1f5ac4c9d0810f075c0447087f4ca2 SHA-1: dc603c4ce347e3a14f08bfacca1aa41962c21888 SHA-256: d3d83da55105118fd5676efd902e8c4f0d118b089236b6570eacf5ac49520f96
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is a malicious lure, specifically promoting a 'free generator / game hack' for Roblox. It links to several external URLs, with the primary one being `https://netsecure.top/app/431946152/download-and-instal-roblox-for-free-game-hack`. The document body, though partially corrupted, also contains this URL and suggests a download prompt. No scripts were extracted, but the overall pattern suggests a phishing attempt to trick users into downloading potentially malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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.
  • 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.top/app/431946152/download-and-instal-roblox-for-free-game-hack PDF link annotation
    • https://kunstmalen.ch/images/how-to-hack-roblox-prison-life-20.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-saber-sim-hacks.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-promocode-hack-robux-pastebin.pdfIn PDF document text
    • https://kunstmalen.ch/images/como-usar-hack-en-los-juegos-de-roblox.pdfIn PDF document text
    • https://kunstmalen.ch/images/robloxcheatnewcom-hack.pdfIn PDF document text
    • https://kunstmalen.ch/images/hack-para-roblox-dragon-ball-rage-2021.pdfIn PDF document text
    • https://kunstmalen.ch/images/how-to-make-hot-sauce-roblox-hack.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-synapse-for-free.pdfIn PDF document text
    • https://kunstmalen.ch/images/roblox-carfs-free-2021.pdfIn PDF document text
    • https://kunstmalen.ch/images/hack-any-tycoon-roblox.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
font_00_sfnt_off000041d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41D3 26696 bytes
SHA-256: d0aca55429a6fa85fd16b374e60d453b1665fd31bc564e7b382c199bcc0268b7
font_01_sfnt_off00007d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D46 18788 bytes
SHA-256: fe4fa28c50638c13cb8a47bdf20f0c504cab7515abe180357c6b9f3c47a026b9

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