Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee231ff3b10f007…

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 21:42:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c2d9091c0305f9c547cf4a2e8f31f4c9 SHA-1: 964ee6978a4efd295505b52d06b5cd1f1e079fff SHA-256: 9ee231ff3b10f00711ef1f7952ebe95458303b415d9e6cc7f72d583ea0d68c71
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to trick the user into clicking a link, which is a common social engineering tactic. The embedded URI points to a URL that likely hosts a malicious payload. The ML classifier also strongly indicated maliciousness, supporting this assessment.

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 https://netcdn.xyz/app/406889139/coin-master-free-spin-today-game-hack PDF link annotation
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/mathep_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/no-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/minecraft-free-download-2021_GM479516143.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
stream_003_off00004966.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4966 24272 bytes
SHA-256: d4c6234c31ff87df42dd5026281488ad56bbd0046ebfd522098c51a11a1daa44
font_01_sfnt_off0000811f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811F 18240 bytes
SHA-256: a96ac7afd25cadbabafd1b9dbf0a180d0c1833ed2d07acb4363f122556c39d20

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