Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62df8d7f351e392…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 05:21:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cec0ac21d62fc15241b1f7b3b91743ec SHA-1: 31179004aecd31c66f6ece74521b17372bd6f9bd SHA-256: c62df8d7f351e392aaea6ec9e4a6b6a2b5c4c4e05f9cabcfa4f4c6a6add448cb
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external files, many of which are presented as game hacks or cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The presence of a download button lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/431946152/free-robux-discord-game-hack
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-2021-without-verification_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/e-free-roblox_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/united-gaming-net-coin-master-hack_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/today-free-spin-link-for-coin-master_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/roblox-cheat_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-link-march-2021_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-gratis_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/free-robux-co_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/minecraft-win-10-free_GM479516143.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/robux_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-daily_GM406889139.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/minecraft-pc-free_GM479516143.pdf
    • http://hipmibadung.or.id/new/public/ckfinder/userfiles/files/coinmasterfree_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050c5.bin
fa4a168199ddea4c3f05cea6e3163274596cd91ebe0568704d51c8145d691205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50C5 24700 bytes
font_01_sfnt_off000088ee.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EE 3884 bytes
font_02_sfnt_off00009596.bin
bd0365f7f2eefd731cbfcd90ede0e91cb43578b4b980f4195e4871e1034addc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9596 18476 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.