Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae1a8c84d30e82e…

MALICIOUS

PDF

43.4 KB Created: 2021-06-09 17:11:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: faa7de521929657a1b461617f1ba72ad SHA-1: 1a863dc3edaf4d480e47d7b48502debd8c1ce29b SHA-256: eae1a8c84d30e82e4cf8195b9702bcf97ddfbde416e2aa734533fd787e1ba389
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.tw/app/431946152/roblox-online-free-robux-game-hack PDF link annotation
    • http://fkunismuh.org/perpustakaan//repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-sell-clothes-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-items-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/original-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-daily-spins-and-coins-for-coin-master_GM406889139.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_off00005001.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5001 24228 bytes
SHA-256: 2b88291c8080618800f9e5b10c04190466b5129a97af4cc2974b3edf8c669b38
font_01_sfnt_off00008773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8773 18208 bytes
SHA-256: b5e3035d3cc377005c1beb6005ffee535c7bfc97c31f2d095ab55758ca6dbf59

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