Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f5c147ae75bd50…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 00:19:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 718dc56d28b35f4de92b64f898ef8ced SHA-1: f42f5c717b4b0107be69cfe01113cb7dbee8681b SHA-256: 27f5c147ae75bd50e999e5dccdd35c70ec3bc13abbfcbe72250d6c516dab0968
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to 'netcdn.co', which is identified as a lure for game hacks. The ML classifier strongly flagged this PDF as malicious. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting malicious sites, likely to download malware disguised as game cheats or generators.

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.co/app/431946152/roblox-fly-hack-script-game-hack PDF link annotation
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-hack-menu-jailbreak-2021-abril_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/build-and-survive-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-website-legit_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-no-files_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-hacking-scripts-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/hacks-on-getting-more-diomonds-in-royale-high-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/hacks-roblox-the-streets_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/robux-hack-download-no-verification_GM431946152.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_off0000302c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302C 23188 bytes
SHA-256: edf5a6e34bab97f8652dd226cf1a86b502fa06350d432b1fd377ed20761689f6
font_01_sfnt_off00006460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6460 19400 bytes
SHA-256: 010459a1a1bc699d4edb85798092beb057a4c9dc23a7923669bacbdb20027d08

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