Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b1747231ebcbf2…

MALICIOUS

PDF

43.9 KB Created: 2021-06-13 19:51:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 24f9b3c4d566bf5941b679e8f80ee434 SHA-1: 904e44fe34242ff157ae54d10dd3623bf478ef91 SHA-256: 01b1747231ebcbf2da3de92499a08f5b1fabb9ff512145aa79475174476717d3
122 Risk Score

Malware Insights

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

The document displays a fake CAPTCHA and a download button lure, aiming to trick the user into downloading a malicious file. The embedded URLs point to various game-related cheats and exploits, suggesting a lure for game-hacking tools. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-boxing-simulator-cheats-xbox-one-game-hack
    • http://roxe2banh.com/public/upload/files/minecraft_GM479516143.pdf
    • http://roxe2banh.com/public/upload/files/free-robux-no-generator_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/minecraft-free-apk_GM479516143.pdf
    • http://roxe2banh.com/public/upload/files/free-pet-roblox-pet-simulator_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/free-robux-generator-roblox-2021_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/coin-master-hacks-for-spins_GM406889139.pdf
    • http://roxe2banh.com/public/upload/files/how-to-get-robux-on-roblox_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/coinmaster_GM406889139.pdf
    • http://roxe2banh.com/public/upload/files/claim-free-robux_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/free-roebucks-no-human-verification_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/where-to-get-robux_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdf
    • http://roxe2banh.com/public/upload/files/hack-para-ayudar-a-la-gente-roblox_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/coin-master-hack-without-verification-2021_GM406889139.pdf
    • http://roxe2banh.com/public/upload/files/coin-master-free-attack-link_GM406889139.pdf
    • http://roxe2banh.com/public/upload/files/free-admin-hack-roblox-kazok-the-youtuber_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/minecraft-aimbot_GM479516143.pdf
    • http://roxe2banh.com/public/upload/files/roblox-hacked-version-download_GM431946152.pdf
    • http://roxe2banh.com/public/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://roxe2banh.com/public/upload/files/rare-free-links-to-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049bf.bin
4db8679329f6a788a45bc5f4695ce5236643aa4325521b9b73b57c34ed88dd57
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BF 26096 bytes
font_01_sfnt_off00008735.bin
e3b0969cf536531b5e0cae184e78f4becb01ee52720b96d866a93c07b7cbc8d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8735 19088 bytes