Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a3d15a2cf33e9a…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 01:17:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 83c3995de98cead39a74a91967f78572 SHA-1: 51b77c1475729a7d01a9ad25cf4cea91637e4251 SHA-256: 20a3d15a2cf33e9a266b2b647e6a89846a793fa69e1e92c04c7526379a300daf
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/free-roblox-new-hood-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-roman-aegyptus-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-how-to-get-robux-free-no-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/400-robux-for-free-gamekit_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/2021-robux-profe-fro-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-hack-for-robux-outrageous-bilders-club_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-cheat-engine-table-and-bypass_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_off00002f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0D 22000 bytes
SHA-256: 14d673e3af29812d45867fbb1907c76d0509996af64f98cb8e5ec652bd33bba6
font_01_sfnt_off00005fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBE 18988 bytes
SHA-256: 8950a9e271d0386f1eacecc81a76f036d214e06c9ce768ab95c58b6de4d844c0

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