Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b118a81b386229…

MALICIOUS

PDF

42.9 KB Created: 2021-06-13 18:41:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f43990a9fbed7d4196b977907fe112dc SHA-1: c9a9068bc30102ff007801d5d75f07f46908ecf3 SHA-256: b5b118a81b386229a7fcd1b4c19125396bbd1d8aca839ba8f541197ad9d4b7fb
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA and a download lure related to "Roblox Robux Hack 2021 Download", strongly suggesting a social engineering tactic to trick users into downloading malware. The presence of an external URI pointing to a suspicious download URL further supports this. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 http://netcdn.co/app/431946152/roblox-robux-hack-2021-download-game-hack PDF link annotation
    • https://www.manmed.info:443/images/_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-kick-off-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/pokemon-go-free-coins-without-human-verification_GM1094591345.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_off00004793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4793 25284 bytes
SHA-256: 172f37a114d60301f117ce4429701f641c917e601bbac1bdce905b3145cc34b5
font_01_sfnt_off00008224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8224 19228 bytes
SHA-256: 183da44973fcdda4f2946040341de9b4e8023fd1713df7708225be8cf91a9141

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