Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcc557657fe6597…

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 12:08:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0a44e9927ef5f22de8015d69d771719a SHA-1: 828aa9443932cf997cdbeddad270d95a9ae8707c SHA-256: 3bcc557657fe6597121c9d009a88ce8dcdabd994f40027971858326ceee5a02e
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 0.9769

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/431946152/free-script-executor-roblox-game-hack PDF link annotation
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://perpus.smkn1pemangkat.sch.id//repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fe5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE5 26164 bytes
SHA-256: 06ab6d66d3edf968df8d2c698326538e2a53ab594ba5ff67ed91828542e7c372
font_01_sfnt_off00008d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4D 2888 bytes
SHA-256: 3336a466fcb64b720a3988844ebe6e938788f23c31f568cd9aeb6f9b1346142d
font_02_sfnt_off0000971f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x971F 18488 bytes
SHA-256: c1d8906df7cfed201442eecb2c05ff4a638972dd76746327367067a9273c3e32

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