Malicious PDF — malware analysis report

Static analysis result for SHA-256 805d0e5264305861…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 08:20:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0d2cd92fe54e260334b2fbaca447b1c1 SHA-1: 0a958afe2005749cbb6836c54f95e54cd1397a2e SHA-256: 805d0e52643058618cd7a81741a0d01f2f5b692e509892fa7c647afee13c9904
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 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-promo-codes-2021-december-game-hack PDF link annotation
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-iphone-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-dll-injector_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/pubg-uc-18_GM1330123889.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-place-visits_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-avatar-for-hackers_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-without-download-pc_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-roblox-coding-guide_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-catalog-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-join-anyone-hack_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-use-wurst_GM479516143.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_off000030d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D7 22680 bytes
SHA-256: 6e19691f63cc1b29a252157749c796c6907a4508f8df9f0214781d5611a9bdf1
font_01_sfnt_off00006341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6341 20140 bytes
SHA-256: 7b21ce222b87a871dbab29cd300add9c0abaa0c0ec5001058b40686ac365c6bd

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