Malicious PDF — malware analysis report

Static analysis result for SHA-256 6493a04c9a93ab7f…

MALICIOUS

PDF

34.6 KB Created: 2021-06-20 09:49:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ad5b8c87d80b65975c6810dae8914a77 SHA-1: 491ecc822cf73d927ee87e113ff5bf5f4132c258 SHA-256: 6493a04c9a93ab7f56ed8fc0c1129154fc36bd7b60a2eaba4c71a825b396fa02
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document impersonates Facebook to lure users into clicking a link for free in-game currency or premium access. The embedded URL, http://netcdn.co/app/431946152/how-to-get-roblox-premium-for-free-game-hack, likely leads to a credential harvesting page or a malware download. The ML classifier strongly flagged this PDF as malicious, supporting the phishing and potential malware delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://netcdn.co/app/431946152/how-to-get-roblox-premium-for-free-game-hack.
  • 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.co/app/431946152/how-to-get-roblox-premium-for-free-game-hack PDF link annotation
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-free-robux-no-password-on-ipad_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/hack-para-roblox-final-stand_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/hack-para-roblox-prision-life-armas-admin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/como-hackear-roblox-para-tener-robux-2021-facil_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/hacks-for-roblox-download-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/roblox-mad-city-free-money_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stiq-amuntai.ac.id/repository/rxgate-cf-free-robux-redeem_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
font_00_sfnt_off00003024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3024 21948 bytes
SHA-256: df3a8654c7b7ec0be7b625d4db3daeec264104c29a7559ce6cd3d362884068ca
font_01_sfnt_off000060a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A3 19592 bytes
SHA-256: 700e86d9e9945eaf1801824d97f7a99f88438ba1c5c62b344f352fefc119caa5

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