Malicious PDF — malware analysis report

Static analysis result for SHA-256 f05a2c231c3d1879…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 07:26:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 606bd6c7b3450d808095fc99c2fb24bf SHA-1: 574a971d99ce4439ce9ce4e5d4a1a2df149ea0c8 SHA-256: f05a2c231c3d187936bef16a12e42c3a551d9fff2e760cf94ccd31a16d4053e3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link disguised as a game hack generator, directly leading to a suspicious URL. This lure is designed to trick users into visiting a potentially malicious website. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/coin-master-spin-hack-game-hack PDF link annotation
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://perpustakaan.baytalhikmah.sch.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id//repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.baytalhikmah.sch.id/repository/minecraft-pe_GM479516143.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
stream_004_off00004f48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F48 25076 bytes
SHA-256: 514f591ab754e5e5440116dedb54d012b00902adf7bb0aeddd12f48344855bcb
font_01_sfnt_off0000895d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895D 17892 bytes
SHA-256: 7f3ff29013eb9f1a81458cbc85dd3db40ecf793c6bb68bdfdc199744a029032c

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