Malicious PDF — malware analysis report

Static analysis result for SHA-256 0382a0768facf0ab…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 11:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fffa1269b9eefcf1ee16cac1052c4914 SHA-1: 242eccaa9fe734d8707094a6d3923c43b01b23ca SHA-256: 0382a0768facf0ab02c88cee80029d2172f7d1dc23052940ccbe7fc1697dbe8d
102 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains numerous embedded links, including one pointing to 'netcdn.tw', which likely serves as a download lure for game-related cheats or hacks. The presence of a 'download button' heuristic further supports the malicious intent of directing users to external resources.

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/client-minecraft-game-hack
    • http://perpus.poltekeskupang.ac.id//repository/free-robux-without-any-verification_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-coins-on-coin-master-generator_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-muscle-shirt_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/info-roblox-com-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-jailbreak-auto-rob-hack-on-mobile_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-accawt_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-email-rewards-link_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-coin-master-cards-link_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-money-hacks-with-lots-of-money_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-coins-hack_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-100-spin_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/speed-hack-in-any-roblox-game-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-into-someones-roblox-account-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-magical-chest-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/redline-roblox-cheat-download-give-me-the-fucking-cheat-rn_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-spins-free-2021_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-ios-gods-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325f.bin
953760eb2d638f4a39a43d0b29151ffd980b87b39caf1364224559092c04f61e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325F 22176 bytes
font_01_sfnt_off00006366.bin
03df11e40c57bdfec20383231f5ff565f7aa00441a2543591869b0e9fd2a6fac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6366 17928 bytes

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