Malicious PDF — malware analysis report

Static analysis result for SHA-256 72a11b438c45cfa5…

MALICIOUS

PDF

32.4 KB Created: 2021-06-26 17:17:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1360eaea572dba4cdbe3dc5256a527c9 SHA-1: 8fb9145645c62ba89ca522cbc02e7196c4f3f68b SHA-256: 72a11b438c45cfa520182cae541d46b7ce7b1bfd173a5c36c5988d5c7841c73d
82 Risk Score

Malware Insights

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

The PDF document employs a game hack lure, specifically referencing "Roblox Dominus Lifting Simulator Hack" and "Robux Generator", to entice users to click on a malicious URL. This URL, http://netcdn.co/app/431946152/roblox-dominus-lifting-simulator-hack-game-hack, is likely to host a secondary payload or phishing page. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-dominus-lifting-simulator-hack-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/jj-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/game-cards-roblox-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/cheats-roblox-highschool_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-makeup-base-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-and-doing-nothing-for-it_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-level-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-hack-someones-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-gfx-artists_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-bux-cheats_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-com-login_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.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_off00002a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A2C 21280 bytes
SHA-256: b7e44fde1c548db49dc7d6dd224a86078c3b6d34390697e221215250e3b9bc8f
font_01_sfnt_off0000586f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586F 19448 bytes
SHA-256: 8bd71e2ab0fdd142a0ea889f5113a954f1eabf105f7725bc3a070344ca3a3cea

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