Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e5a3b7279d376f…

MALICIOUS

PDF

46.4 KB Created: 2021-06-10 18:32:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7d49d9e19a5b7204b2cfc01d210cdbed SHA-1: 1344c8fc0edb50308aecd9430f82fbdce8b5d67b SHA-256: c6e5a3b7279d376fadc5c10d70b901cd643e043d1d3ca0cb416d92fbb400fd41
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 0.9832

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.tw/app/431946152/how-to-install-a-hacked-client-roblox-mac-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/a-game-were-you-can-get-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-dll-roblox-exploit-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robloxcom-free-bc_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-project-jojo-free-vip_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-how-to-complete-heavy-metal-machines_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5640 25572 bytes
SHA-256: f54c1467d890e142c8e3e9d8094352a246e0d203a6b7714e60a8117bffef97db
font_01_sfnt_off000090f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F5 18940 bytes
SHA-256: 78ff384e68ef38e970769a0e9e4cd4a099a532e52892df68e8f812b6b09296a8

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