Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c84753a320b80f9…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 01:24:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e2cfe43bbf98ade2fa1738b9ebc444d9 SHA-1: b6bd8c7cd4354781b37a0c6153a41e0e695ef7e9 SHA-256: 8c84753a320b80f92cb369dad7a6fecd194106394154a76f5e3e4d1b0dd69340
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a game hack redirector, specifically for Coin Master. The document body and extracted URLs reinforce this, pointing to various game hack sites. While no scripts were explicitly extracted, the nature of the lure suggests it's designed to trick users into visiting malicious sites, potentially for phishing or malware distribution.

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/how-to-hack-coin-master-game-hack PDF link annotation
    • https://linhkien247.vn/public/upload/files/roblox-royale-high-school-hacks-de-to-get-diamonds_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/adopt-me-hack-tool-roblox_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-free-radio-games_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-robux-credit-card-free_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-oprewards-hack_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/terminal-railways-have-a-train-free-roblox_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/best-roblox-hack-ever_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/giveaway-free-robux_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/robux-hack-today_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-hack-no-crash_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/download-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • https://linhkien247.vn/public/upload/files/roblox-hack-free-robux-pastebin_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_off00003032.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3032 22920 bytes
SHA-256: 5389854230556317e8a92c529350fadec9806366d1ca2a079ed9497cf7071375
font_01_sfnt_off000063b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B5 18168 bytes
SHA-256: 2bd458773159c42ddb973016f08b2d4d6bea9039625adade8827a8f393a5a95a

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