Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce9fc76e5ae011e…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 07:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a3daf1f2f3f22fb7f51c770da5514de8 SHA-1: 262c384aba094b8717e3a204eeb0692f278ab655 SHA-256: 6ce9fc76e5ae011e58879d9986e4948906d4f6f12ce5c4b98214f130813db354
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are presented as PDF files related to game cheats and hacks for popular games like Roblox and Coin Master. The ML classifier strongly indicates maliciousness, and the presence of a link farm heuristic suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The document body itself contains a direct link to a suspicious URL, reinforcing the lure.

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.co/app/431946152/free-roblox-animations-game-hack PDF link annotation
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-10k-robux-for-free-2021-july_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-your-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-the-legendary-swords-2-rpg-roblox_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/dank-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/roblox-prison-life-v0-6-hacked_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/new-2021-roblox-exploit-hack-superskidv1_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-mad-city-roblox-step-by-step_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/how-to-hack-someones-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ambasador.md/ckfinder/userfiles/files/free-minecraft-client_GM479516143.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_off00003097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3097 22396 bytes
SHA-256: 214ca27f459622b7813cdda4e9b05f87ba2896d5a6a613faa68eab646c694e69
font_01_sfnt_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 19132 bytes
SHA-256: 82cf62e69a15f895d731bdc533c0a276dba0a7bdea57113a0433dd5b617bb9b0

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