Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f1ab64123a997a…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 05:41:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9cc658c65e911a6dbcdac60defdba41a SHA-1: 461def07e9dd1378af37351fdf94ba9352f1cd2a SHA-256: 68f1ab64123a997acc0d695150e8493ff4360cb3b6f72794e778ef3d9486ee59
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external PDF files, presented as lures for free game items or currency. The ML classifier and the PDF link farm heuristic strongly indicate malicious intent. The document likely serves as a gateway to further malicious content or scams hosted on the linked domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/479516143/minecraft-java-edition-key-free-game-hack
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/easy-robux-com_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-fast_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-2021-app_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-links-for-free-spins-2021_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/robloxcom-get-free-robux-only-today-adverts-click-link-below_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/game-hunters-coin-master-free-spins_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/minecraft-online-free-no-download_GM479516143.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/8bp-hack-coin-master_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-18_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/where-to-get-free-robux_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-com-no-verification_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-place_GM431946152.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdf
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/robux-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000542b.bin
9cdf003c0e18b4a1e379a6553837700945c4a5edc03b1aeab9572ced8da23518		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x542B 25116 bytes
font_01_sfnt_off00008d0b.bin
334aec38d846e20b2b1a8e37a7c069b76e72c9b1d6d0d2be887913576bf47b02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0B 18344 bytes

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