Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cf04e3cff05d63…

MALICIOUS

PDF

43.9 KB Created: 2021-05-14 08:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6566325bc0cd2b19bfb7d0a09917b474 SHA-1: 7177a06acc39b6820eb44d3a7df6fbd597d24cdb SHA-256: 84cf04e3cff05d63aaa0a827bc80006298f6cb39e69ae5201022a0c6a308c172
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a fake CAPTCHA lure to trick users into clicking a link, which is a common social engineering tactic. The embedded URI points to a URL that appears to be related to game hacks, further supporting the lure. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead the user to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/479516143/how-to-get-hacks-on-minecraft-game-hack
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-free-link_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/microsoft-robux_GM431946152.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/apk-hack-coin-master_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-minecraft-hosting-24-7_GM479516143.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/cm-daily-spins_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-2021_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/como-hackear-coin-master-2021_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/free-spin-link-coin-master_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/roblox-free-roblox_GM431946152.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-heaven-free-spins-link_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/daily-free-spins-and-coins-coin-master_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-safe_GM406889139.pdf
    • https://ptun-denpasar.go.id/new/public/ckfinder/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000050c1.bin
bdce6806e7bfeddcc4a4704d70bc16927b9a2433600cbeefca6ab28d0af5b056		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C1 25056 bytes
font_01_sfnt_off00008a4f.bin
9f1e79a3b07781afcdd90921eb79530491bd6e36a063b246dd64f6dc9a4bd67a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4F 18044 bytes

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