Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb1fa0e6f020d3f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 06:03:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f6200dc38e4619c77a363676eecbe4f0 SHA-1: 10292bc67c3216931d2f47637daaa9065b441ad9 SHA-256: deb1fa0e6f020d3f9db0b0dcd2f8dc88f0f89ac8d218b7a4ea97905776f78a7c
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/431946152/free-robux-accounts-game-hack PDF link annotation
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://bkd.padanglawasutarakab.go.id/asset/ckfinder/ckfinder/userfiles/files/how-to-get-to-village-3-in-coin-master_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_003_off00004bad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAD 24716 bytes
SHA-256: b51a23298e608785cd46d34592a9a77a955033c077e51aa429325ce858556a70
font_01_sfnt_off000084bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BF 18120 bytes
SHA-256: ef72730342a71d63428e939ae8b3e53b657bfaebcd113dd5195284c27a8ef9c4

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