Malicious PDF — malware analysis report

Static analysis result for SHA-256 6441c5867feb2357…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 09:21:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 62f755b754533ae41321443e413c53b2 SHA-1: 482cc8b9a519a60d3d62a789b25bfe7a7d3551a4 SHA-256: 6441c5867feb23577fc16f4fe91040da68ab1d3e9ed31e3062e7d07f2746458a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/groups-with-free-stufff-droups-roblox-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/hilton-hotel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/comment-hack-sur-roblox-admin-commands_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/make-roblox-t-shirts-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-jojos-dream-adventures-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-clone-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-hack-2021-real_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/black-magic-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-diamonds-on-royale-high-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-atm-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-strucid-free-private-server-join_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-royale-high-how-to-get-free-diamonds-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-tiktok-followers-no-human-verification-or-survey_GM835599320.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_off00003069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3069 21780 bytes
SHA-256: ce9f634aa914b53c526fef96f9d00759a2d81b400af0a3276367483078456aff
font_01_sfnt_off00006044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6044 19720 bytes
SHA-256: a1bc05742678d9d8388e4cca2da12661b89baf85d8fc414959f921b0e6d5c09f

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