Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3b7e47be04f8ec…

MALICIOUS

PDF

48.1 KB Created: 2021-06-04 01:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e4bb36d11cbee353bccfb4f959f796b5 SHA-1: 40fe6aadceb19e2673349a14b06360a920a5a1f0 SHA-256: bb3b7e47be04f8ece5a4b026be300ba5a48c63a0883f487bcc88bfffd9a8d909
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure related to game hacks and free currency to trick users into clicking on embedded links. The primary link, https://netcdn.online/app/431946152/robux-hack-using-pastebin-game-hack, is identified as a malicious redirector. The document's structure and embedded links strongly suggest an attempt to lead users to potentially malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/robux-hack-using-pastebin-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/bloodborn-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/pubg-in-uc-hack_GM1330123889.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/earn-robux-for-roblox_GM431946152.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_off00004f35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F35 25288 bytes
SHA-256: 36f1c797bc7edf580fd4c73550bab170c036c7cf19e90208ba3913144ec3ec76
font_01_sfnt_off000089a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A4 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000096b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96B5 19100 bytes
SHA-256: df088dc6df141b1424a5b661e287dbcc27b5ef5ae435259a6758389b5d3fe4d7

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