Malicious PDF — malware analysis report

Static analysis result for SHA-256 52529989ad1a0869…

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 07:32:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dc38382c3a4d8de17eea3411f49b74ef SHA-1: 6cd53218cbdbef5ff3963acf6ad6e7d78dc580fd SHA-256: 52529989ad1a0869b66523e2ea6c8e684e750bc26e05f2c6a7fc2d1e58a0af7a
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links and a direct URL pointing to resources that promise free in-game currency and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to distribute malicious content or SEO spam. The ML classifier also flagged the document as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-on-apple-computer-game-hack
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-for-free_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-hack_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/can-u-u-use-cheat-engine-on-roblox_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-minecraft-account_GM479516143.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-hackprogamers-com_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/script-executor-roblox-free_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-for-free_GM406889139.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-inspect_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-website_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-name-tag-hacks_GM479516143.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-com-games-referrer-roblox-player_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/minecraft-free-online-unblocked_GM479516143.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-websites-2021_GM431946152.pdf
    • https://bpkad.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-roblox-cards-pin-number_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000320b.bin
6f7e89333d7eab897cfecccf8069f265c3a489589672be86b5cf4d005422b82b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x320B 21816 bytes
font_01_sfnt_off00006246.bin
1f9ca083afa7fd149b36e703a11acb33080eaef37b987cc7c13589d7c3dcb28f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 19492 bytes

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