Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6c5badc497fc31…

MALICIOUS

PDF

47.0 KB Created: 2021-06-13 19:38:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 91139dbb0030ab8dd34cc9b9ed48c14f SHA-1: ab5c3379081d250808b662d58a96958a85571f45 SHA-256: aa6c5badc497fc319c0c231049804bf814a8fa4f9de895f7ff94ecfb624d91e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and links to a URL that is flagged as a game hack redirector. The document body, though partially corrupted, contains text related to game hacks and the suspicious URL. The presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into downloading a malicious payload or visiting a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/how-to-get-free-robux-fast-game-hack PDF link annotation
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/earn-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/rbx-website_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D1F 25052 bytes
SHA-256: 6b4a40628b79e1104822c80e184b2335a4defa708d3b351d9ab0e2bb148eaa2a
font_01_sfnt_off00008748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8748 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000093ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93EF 18696 bytes
SHA-256: 58cc60b3b3256d9c11abfeb44117fad9427940a3fa25267eafb9127e0b00f96c

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