Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e1b5af5ede6d78…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 03:24:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8a785c7325cca173acacaeaf53266df4 SHA-1: 76584ab81b7cc2079b20566424313a3c7f6c3d69 SHA-256: 66e1b5af5ede6d780235da18e9b6d6227448a6a6691573247fc9782c36cba3cf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed to lure users into clicking them by promising game hacks and free currency. The primary URL, http://netcdn.co/app/431946152/how-to-hack-animation-pack-in-roblox-game-hack, is identified as a redirector to a malicious site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

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-hack-animation-pack-in-roblox-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/siri-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-download-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-free-items-from-catalog_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-teleport-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/headphones-free-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/hack-roblox-rage_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-hack-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-by-using-inspect_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-builders-club-2021-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3097 22104 bytes
SHA-256: 3da08170867cf3ab5884a20ec93a0348607eee85aa6ff1b0fb7332a4d9837b25
font_01_sfnt_off000061a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A8 19456 bytes
SHA-256: 76dfc763d83c341a181b331d07498d8496096c072bf8ea60aa9ffe5ffe1a9ddb

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