Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0df26d2c986f0d…

MALICIOUS

PDF

35.2 KB Created: 2021-07-06 07:24:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: dd49a1088fad1cefd7e422e18f54c5a1 SHA-1: c3ee39940beb5b41fead6686b81068e661698a16 SHA-256: ad0df26d2c986f0d17f71405d512c4b7ddedaf778ec1743c8121d42c807e7153
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to 'netcdn.tw', that promise game hacks and free currency, a common lure for malicious downloads or phishing. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure further support this assessment. No scripts were extracted, but the document's structure and embedded links indicate a social engineering attack.

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/406889139/how-to-get-free-spins-on-coin-master-game-hack PDF link annotation
    • http://perpustakaan.urindo.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/notoriety-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/roblox-hack-tool-cheat-hacker_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/como-conseguir-robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/pubg-uc-100k_GM1330123889.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_off000033ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AC 22900 bytes
SHA-256: 69483f8446a71de79c47aa8ee44761fa3dc780e34fcba7944de0e1544c4a716f
font_01_sfnt_off000066fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FB 18336 bytes
SHA-256: f6486e4c00d3cdc8b5d1192946ddbf803be47e84f44f52a8e54ea271a052a700

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