Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b29d6fdffcaa3aa…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 08:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 61039cc56e38a85f44f17bb5d50f4183 SHA-1: 0e955ac9bb70d8115fa2528c1e7c516034e9c691 SHA-256: 0b29d6fdffcaa3aa9552027926f7c81214bef745ca25bd5f1e34ad468ccc873e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure users with promises of game hacks and free in-game currency for popular games like Roblox and Coin Master. The primary malicious link, http://netcdn.co/app/431946152/roblox-password-hack-tool-game-hack, is flagged by heuristics as a redirector for game hacks. The document's content and heuristics strongly suggest a phishing or scam attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-password-hack-tool-game-hack PDF link annotation
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/hack-menu-exploit-script-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-pc_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/cheat-engine-hxd-roblox_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://kpu-tabanankab.go.id/new/public/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3163 21388 bytes
SHA-256: 5d8107cead2ef57f2329a084d58bde9000d3c823bd859986e681c1fbe8b1fc71
font_01_sfnt_off0000604a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604A 19148 bytes
SHA-256: f8c5c54003e92b48212a01a07c1d80885c26d365da63e617e8d62e9bd90121b2

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