Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6227e5246e09133…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 10:33:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 410f28d50adb63e93ca3b3e21d16b5a1 SHA-1: 1c6501384236394a32e78baebc03c95715cf2174 SHA-256: b6227e5246e0913329b0a6a7200eed66df72687c52450b7cc274a13007ac5ec9
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 0.9971

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.xyz/app/406889139/coin-master-free-spins-daily-2021-game-hack PDF link annotation
    • https://jas8.com.tw/image/data/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/google-moon-active_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/robux-sites_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://jas8.com.tw/image/data/files/coin-master-free-spins--coins-2021_GM406889139.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_003_off000047ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47ED 24980 bytes
SHA-256: 370f0e0e9b69836e711ff4d0f0d7c5408fd1a0a51aeb76e3ceada3f0e53385a4
font_01_sfnt_off00008010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8010 18708 bytes
SHA-256: 6b4e533402effa4bef1f1a99bc4bd1715a96498a79031c9daf0202c2985212b5

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