Malicious PDF — malware analysis report

Static analysis result for SHA-256 457cc24c56d21ab6…

MALICIOUS

PDF

44.9 KB Created: 2021-05-16 03:35:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8b007f7f2bea99e6f1040cc954508fc8 SHA-1: d3800ce37a96e3b308d4e7b807a5cb61c895987f SHA-256: 457cc24c56d21ab6df43e901f8a0c3fa64f9eaa255ae5a728c389cb5e90f2c8b
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 0.9980

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 https://netcdn.xyz/app/406889139/coin-master-hack-version-download-2021-ios-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-codes-generator-no-verification_GM431946152.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_off00004fc8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC8 26088 bytes
SHA-256: ff2b471fda3b037482fbe6b1899b7bbfc8c9c33d91eba585b724a206201bd065
font_01_sfnt_off00008b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B81 18832 bytes
SHA-256: cc7b03749ee8e0bb295fc18f3327ccd24d21e4560feed49354a921164f87bbf0

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