Malicious PDF — malware analysis report

Static analysis result for SHA-256 62102b299ddf25b8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 21:45:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2eb0f89a3785fc597feed53772b8956d SHA-1: ac7776e69b71dd6cc8e0832ac54278f792ece5e1 SHA-256: 62102b299ddf25b88f85f9e0555066b2025cf768a7c0993a16f3e0bd34b7386a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link disguised as a game hack generator, specifically for 'Coin Master'. This link, http://netcdn.tw/app/406889139/coin-master-spin-hack-link-game-hack, redirects to a suspicious domain. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a lure for game hacks. The document body, though partially corrupted, contains similar URLs and references to game-related cheats, reinforcing the phishing lure.

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.tw/app/406889139/coin-master-spin-hack-link-game-hack PDF link annotation
    • https://www.knjigebuducnosti.com/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/fortnite-roblox-play-free_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/robux-redeem-codes-hack_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/jailbreak-script_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
stream_002_off0000305d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x305D 23272 bytes
SHA-256: 8ea73d5a20fab5dd8ed47d6e0d52739f4c0f88604d0e13fe9e00ccc71703edcb
font_01_sfnt_off00006502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6502 18180 bytes
SHA-256: a132cedd825d849e0d721dfbb1ea0ac908be68f445a4640ebf6ea6c953a82746

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