Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe2b77480398d92…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 22:12:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5d23d65e803cffa0e5796aa35b5c66a1 SHA-1: 1ae0a55b1d7faeb204814ced4797ed59a37bea24 SHA-256: 4fe2b77480398d9222c9d4c2e8ad814a419938e8c6a516a805cdfcaeff4b2a50
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 0.9824

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.tw/app/431946152/how-to-get-free-stuff-on-roblox-game-hack PDF link annotation
    • https://www.medanmesin.com/ckfinder/userfiles/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/is-tiktok-free-on-app-store_GM835599320.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.medanmesin.com/ckfinder/userfiles/files/roblox-adopt-me-free-pets_GM431946152.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B58 22360 bytes
SHA-256: b6b9533c5f059b47f3d1e0f1aae543155eaeaad65d76b35f17de37e4c90585bd
font_01_sfnt_off00005d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D27 19056 bytes
SHA-256: 4c8152de48653702d530bfede1eacb36ad7a4bd714fdb4c93f232e1a84fba55a

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