Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd13c3ed589337e…

MALICIOUS

PDF

35.7 KB Created: 2021-07-07 22:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0d630803dcacbaa91c5d8ca95ac06f76 SHA-1: 09436e1ca63b1de0a5c9abf12c119ef299d3d95b SHA-256: 9cd13c3ed589337ec603408092716a95fb1b3026bfd1fc88dc61524fe005e689
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which are hosted on domains associated with game hacks and cheats. The document body, though partially garbled, includes a URL pointing to a 'minecraft-free-on-xbox-game-hack'. The presence of a large number of external links, many in a link farm pattern, strongly suggests a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the overall structure and URL targets indicate a phishing or malware distribution attempt.

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.tw/app/479516143/is-minecraft-free-on-xbox-game-hack
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/cache-http-frtheperfectriacom-wirr-realfreerobuxcodeshtml_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-items-glitch_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/robux-gift-card-2021-hack_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-hack_GM406889139.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/oprewards-robux_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/hack-treasure-hunt-simulator-roblox_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/como-ser-un-hacker-en-house-of-keys-roblox_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/sunset-coast-gui-roblox-hacks_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/como-hackear-cualquier-juego-en-roblox_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-whatsapp-group-link_GM406889139.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/broken-bones-iv-roblox-cheats_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-cheat-codes-n-text_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/this-exploit-hack-has-been-developed-by-ak47-roblox_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-download-no-virus_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-free-hair-boy_GM431946152.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdf
    • https://www.dikes.badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-come_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000359d.bin
d551cc256668289e913349701dedef8aa1ac8d8979675b402b022614d6c306ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x359D 22776 bytes
font_01_sfnt_off00006829.bin
987f99d7e2443cf381540eae1143ad62299bf58b05908f5564068197b2bc8841		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6829 18596 bytes

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