Malicious PDF — malware analysis report

Static analysis result for SHA-256 23950940be138cc9…

MALICIOUS

PDF

45.9 KB Created: 2021-05-16 11:35:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef50b847e730edbf50772d8ea93ad42b SHA-1: e25362325f3fd7b95d0f493ab151ded4d6ed6572 SHA-256: 23950940be138cc9300e5881bc65727e4d54145dccec52a84e5e11ba20cd854f
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to lure the user into downloading a payload. The embedded URL, https://netcdn.xyz/app/406889139/unlimited-coin-master-free-spins-game-hack, likely hosts the malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9544

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/unlimited-coin-master-free-spins-game-hack
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-for-ios_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/free-private-server-roblox_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/free-minecraft-servers-to-join_GM479516143.pdf
    • https://www.cinemapalace.ro/trailer/files/fb-coin-master_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/get-free-robux-without-human-verification_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/what-is-coin-master-app_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-daily-free-spins_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spins-whatsapp-link_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/cute-free-hair-on-roblox_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/buy-robux-free_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-tool-for-pc_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-2021-link_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • https://www.cinemapalace.ro/trailer/files/give-free-robux_GM431946152.pdf
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004afa.bin
0e201a63c2e4c276dfe3462effdd386910252fed17848d513dc421f6f5576b41
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFA 24528 bytes
font_01_sfnt_off00008362.bin
d859fd77b85f3b3415639a87e8809ecf698e2c52ea4a2633c07d9e96259cae8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8362 3620 bytes
font_02_sfnt_off00009025.bin
8174e31e86101b13b9901149211171076a60a6b50e3f7464e0ceab7d787638aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x9025 18580 bytes