Malicious PDF — malware analysis report

Static analysis result for SHA-256 de93f8112bfeec55…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 05:37:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a7045430baa5d557e9e4a3b566d32ec7 SHA-1: c5d9b2faf4d2ba3f326d11ddd6511e019fa98283 SHA-256: de93f8112bfeec55939b540b401bfaaecf0fd635458ad4bf99f5860152145404
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 0.9796

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/406889139/static-moonactive-net-free-spins-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/tiktok-free-on-google_GM835599320.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/rbx-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/getrobux-info_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/tiktok-free-views_GM835599320.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_off000051be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51BE 25092 bytes
SHA-256: d63e24a0e4db4923cc0154e66f1f87d340f3f1c9fef1cfa67a9aa3068f39150d
font_01_sfnt_off00008bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDC 4020 bytes
SHA-256: 7d3617ecf51e14e6cffc9372c4441988c3b6cb3ea010f7512aee6af842ef388d
font_02_sfnt_off00009967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9967 18000 bytes
SHA-256: 550c58a86183c192f11bd993c378cabcbb9cb434b0a2a3ed80188f155553ce19

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