Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46bc99d0e9372f2…

MALICIOUS

PDF

51.8 KB Created: 2021-06-04 03:59:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 464ed20ed5f0f8d51f87e24780640a0c SHA-1: 6588fed1e2d8d120af05c55729006b9d61e6c01a SHA-256: b46bc99d0e9372f2e7d145a1992c16a4b64614a564112d2ce705c1131abf8993
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 0.9464

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-lvl-7-roblox-game-hack PDF link annotation
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/play-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.matsada.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition-account_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_off000051fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51FE 26012 bytes
SHA-256: 1e95d724184c40aedf6619bea71cfbae04adca4e43393ce3c3b29aead89b6971
font_01_sfnt_off00008be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE2 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000a6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6CF 18656 bytes
SHA-256: 508a8526ff71a4156ef1603714db7e250b6f32bb8da75ea2abcaa9075db22fb3

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