Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e5de3d84af7f69…

MALICIOUS

PDF

36.4 KB Created: 2021-07-05 07:40:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5f24e9ab78821e57d873fa2550c3d4d1 SHA-1: 2eff093abdda8a3e0705affc36bc1f21e442256e SHA-256: b2e5de3d84af7f69779ee2aae9deba8a33499f63f6a4232c0f1d6f8d3de230a9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and text related to 'free Robux' and 'game hack' lures, directly pointing to a suspicious URL. This indicates a social engineering tactic to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/get-free-robux-without-doing-anything-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/cheat-roblox-pc-phantom-forces_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-how-to-get-the-sqaure-body-for-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/get-easy-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-card-codes-for-kids_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-make-hot-sauce-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/which-games-on-roblox-you-should-fly-hack-in_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/october-2021-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/sword-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-arsenal-free-vip-server_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-piano-roblox_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-apk-ios-download_GM406889139.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_off00003370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3370 23192 bytes
SHA-256: 64fd153d279d619c5ca3757afe30005edfd57e5b3b0e82484681ee80408eea6f
font_01_sfnt_off000067af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AF 19652 bytes
SHA-256: d01fab7bff865e1e572a69531771b19011470ec9dd60cfeb54f37c62aa9fdbeb

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