Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e8d44735cfa647…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 08:56:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 311a3ad4198d658a74aab557654b54a9 SHA-1: 94863ea5266cb4c008902fb9d1d47a55cbf7080c SHA-256: 62e8d44735cfa647d6c170ec4bc5912891e1008ee68d25e4fd42ada9b26a14d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.online/app/406889139/free-spins-for-coin-master-app-game-hack, is likely intended to trick users into downloading a malicious payload or visiting a phishing site. The document's structure and content suggest it is part of a social engineering campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/free-spins-for-coin-master-app-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/pubg-uc-voucher-code_GM1330123889.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.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
stream_004_off00004f65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F65 29860 bytes
SHA-256: ad9ea5d0a33ed7b91de0f7918c7cd797c2b8ca4645d20c0d12285b326c735d00
font_01_sfnt_off00008c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1D 17884 bytes
SHA-256: c0e07e045f0496ba68af439e810d5bb13e23b0d850ef9426c095223eaa712aa7

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