Malicious PDF — malware analysis report

Static analysis result for SHA-256 8491d8c680058be6…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 05:31:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 13f0dbe56a71009504f07895229b7fea SHA-1: 57bcbee56dae392f8dc603396bcb276c7ee15a08 SHA-256: 8491d8c680058be647956fadc46adcd9663b7dfc1647f999aa0d4bb41a841fe0
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/479516143/how-to-download-minecraft-for-free-on-your-phone-game-hack PDF link annotation
    • http://elibrary.uinbanten.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/pubg-uc-rate-in-india_GM1330123889.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-cheats-for-escape-super-clowns_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000543c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x543C 25516 bytes
SHA-256: 5050d4d3d79be4890e7999ab959445add6a7b6a6b9e901a07e2dec0aa6cbd412
font_01_sfnt_off00008e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E83 2880 bytes
SHA-256: 5a7037ee205bf75f905515769db57a53913419cc9c3d2cda1d77ad72de5cbef7
font_02_sfnt_off00009878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9878 18912 bytes
SHA-256: 9fc98a0c1d4979ba11bfefb4e7a2ffed51dbf00c4e0419c11e74f5ed326d6caf

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