Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9591e547166013…

MALICIOUS

PDF

32.3 KB Created: 2021-06-18 05:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 07e8fef2dce59b119002fcf24f61bc46 SHA-1: 6b30b5007ba107d249bbdbfc92819d41248a98c0 SHA-256: 2e9591e547166013147ceae329d7572eda3a3983c963503d0335fef889f6d17f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free Robux generator" which redirects to the malicious URL http://netcdn.co/app/431946152/how-to-get-free-robux-on-roblox-2021-youtube-game-hack. This URL likely leads to a phishing page or a download of further malware. The ML classifier also flagged this PDF as malicious with high confidence.

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/how-to-get-free-robux-on-roblox-2021-youtube-game-hack PDF link annotation
    • https://library.fdk.ac.id/repository/youtube-videos-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-hack-roblox-craftwars_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-bugatti-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/robux-hack-pastebin-fast_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-a-free-minecraft-server_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
font_00_sfnt_off00002a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A74 20860 bytes
SHA-256: 036545b28ddb8328e36b210faf5667ffd808f41c8a631018848d8bb30737c38b
font_01_sfnt_off00005770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5770 19620 bytes
SHA-256: a6f6cf867a4b6e77496a9e7474d02ed78ffaf2459d7a78ee0da8313aa76ea876

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