Malicious PDF — malware analysis report

Static analysis result for SHA-256 127889c8e96425d2…

MALICIOUS

PDF

41.0 KB Created: 2021-04-22 15:24:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0b8514102cc167aacde73c86068ad20b SHA-1: 9256bffac3828ac4dc72ed3162fc1d3b1c132612 SHA-256: 127889c8e96425d28c4bc356dbd35f21d083ef688f70c0bef62a32b392e0f644
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure the user into downloading a "Lua Injector Script" for Roblox game hacks. The primary link directs to a URL associated with game hacking tools, indicating a likely attempt to deliver malware disguised as a cheat utility. No scripts were extracted, but the document structure and embedded links strongly suggest a malicious intent to trick users into downloading potentially harmful software.

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/lua-injector-script-for-cheat-engine-roblox-game-hack PDF link annotation
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-2021-roblox-accounts-2021-site-v3rmillionnet.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-hack-kick-script.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/kazok-roblox-hack.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-into-somebodys-roblox-account.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/t-shirt-adidas-roblox-free.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/esp-roblox-hack.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/get-free-robux-and-tix-no-survey.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/nintendo-switch-roblox-free.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-robux-with-cheat-engine-64-2021.pdfIn PDF document text
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-roblox-and-get-free-robux-2021.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_off000041f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41F2 25292 bytes
SHA-256: 6a8e92bdab276db32fcebd6a13d11cf42a92e8566047cd086331611ee4714660
font_01_sfnt_off00007b5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5C 19356 bytes
SHA-256: d4666f1ffea85e9f3202e78fb80d9b260d915e233a9a04df768140fb55543bd9

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