Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9db393e798eb46d…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 07:47:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8283af981f13648cf1dc67cfcbea3298 SHA-1: 9718d58404159f9b3486bd5d635e38e722c3db44 SHA-256: c9db393e798eb46dadbb061bf1ad80193897b83911914e01a4ad049d32a3c20a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are SEO-optimized pages promising free Robux or game hacks. The presence of a PDF URI heuristic and the ML classifier flagging this PDF as malicious strongly suggest it's designed to redirect users to potentially harmful sites. The document body, though truncated, reinforces this by containing similar lure text and URLs.

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/431946152/how-to-get-more-robux-for-free-game-hack
    • http://lib.smklabor.sch.id/repository/free-robux-no-human-verification-or-survey-for-pc_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-hack-the-streets_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-how-to-get-free-lvl-7-hacks_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-codes-to-get-free-items_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-much-pokemon-go-free-account_GM1094591345.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-admin-on-roblox-2021_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-tower-defence-hacks_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-robux-promo-codes-april-2021_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-girl-hair-free_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-robux-groups-2021_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-2021-robux-for-free_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-roblox-bloxburg_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-free-medieval-hood-of-mystery_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/black-panther-mask-roblox-free_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/get-anything-for-free-on-roblox_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/comment-avoir-des-robux-gratuit-sans-hack_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/robux-hack-code-pastebin_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-followers-roblox-2021_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-roblox-generator-for-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032ed.bin
807f29a91f1f5ad102ba152a2ada691a390b69797f245ffae62999f4e0757dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32ED 22500 bytes
font_01_sfnt_off00006545.bin
2bff2d2121057f006b71b066e94fd010776662c2bbd91426c2b13817cbe3f110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6545 19180 bytes

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