Malicious PDF — malware analysis report

Static analysis result for SHA-256 be779de9d87dc5bd…

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 12:29:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 29dd4096483d90129addec76021ff6bc SHA-1: a9a26b70cad0f0834ab3c9a538aa39abde2f95c4 SHA-256: be779de9d87dc5bd669f7ff0e0eaee4235f9c8783a138a74fdd4767caa046f75
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document. It also contains an embedded URI pointing to a suspicious URL, likely intended for downloading a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/406889139/ear-free-spins-for-coin-master-game-hack
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-roblox-dominus_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/minecraft-build-hacks_GM479516143.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-pin-codes_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/claimrobux-net_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-without-doing-anything_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/robuxmatchcon_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-roblox-accessories_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-roblox-clothes-for-your-avatar_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-domain-for-minecraft-server_GM479516143.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-hack-roblox-games_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/download-hack-coin-master_GM406889139.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-generator-for-kids_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-codes-generator_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdf
    • https://www.laxmansartemporium.com/uploaded_files/userfiles/files/spin-coin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bb7.bin
a3ec1b607a841156a04917f7de1112ff1839abee7c8de1457ca15188e03cac28		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB7 24772 bytes
font_01_sfnt_off00008504.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8504 2880 bytes
font_02_sfnt_off00008eee.bin
ecd8870de9922492473d00c4b8bfc3347df30c0c57608714ecf3175ea1d2679c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEE 17884 bytes

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