Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa7657f85cf1d7c…

MALICIOUS

PDF

34.8 KB Created: 2021-06-27 17:41:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f943cd768a30cc28e42f6ec833709d48 SHA-1: 537693eddaf1e7224e59a3fe8fe731a1a0212f15 SHA-256: 5fa7657f85cf1d7c55115ec01eac8b749155d67ff0baf23e8c794e9e8c836661
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that promise free in-game currency or hacks for popular games. The primary link, http://netcdn.co/app/431946152/how-to-get-free-faces-on-roblox-ipad-game-hack, is flagged as a lure for game hacks. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or to download further malware. No scripts were extracted from this sample.

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/how-to-get-free-faces-on-roblox-ipad-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-earn-robux-without-cheats_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hackin-anybody-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-game-advertising_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-tix-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-and-tix-on-roblox-no-survey_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-pyramids-strucid-beta-free-skin_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/clubdark-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/raviz-cheating-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-human-verification-and-no-offers_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_off0000301e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301E 22428 bytes
SHA-256: ea7a185dd011fe33859b7911a53e07c32a7f6fe7b9cb8dad76a0d70ab7850aaf
font_01_sfnt_off00006220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6220 19268 bytes
SHA-256: 5f991a52150aa3d0d8bd7f3594071633dd46b86903e11008670cf74f1bf34f32

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