Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06315cb2aed58d6…

MALICIOUS

PDF

37.2 KB Created: 2021-06-23 05:43:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3ff1792733b248e103975afdfbf6faf3 SHA-1: d6f578aa81938067e76224a33cb1c58c3497abf4 SHA-256: c06315cb2aed58d6f39a4712579f354dcdd9bd19cf5ba4b8aea81eb63f3653cb
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/roblox-hack-account-pastebin-2021-game-hack PDF link annotation
    • http://pustaka.fkm.unand.ac.id/repository/club-tesla-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/exe-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hack-robux-100-real_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/counter-blox-roblox-offensive-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hacker-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/robux-hack-on-wish_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hacks-for-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hack-mining-simulator-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/aimbot-fro-roblox-download-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-v1-2-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-make-any-purchase-in-roblox-games-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/what-to-do-when-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-wallpapers-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/assassin-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A4E 22084 bytes
SHA-256: 9eee5f5edf35c6fa5b2654d134db3d2cc9ff728eac695de10474ded2a7458351
font_01_sfnt_off00006b01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 19576 bytes
SHA-256: ffe39746f5ee9d34ab2f0aefc45676f4466d1e31537bfae1f11d13f48f76daeb

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