Malicious PDF — malware analysis report

Static analysis result for SHA-256 88145d18a46f17fb…

MALICIOUS

PDF

47.5 KB Created: 2021-06-11 05:14:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 92adf6bc1f3ef965ac72ebea62b97f3b SHA-1: d4294602310dea156e3f38c1edf7390c871c7ec1 SHA-256: 88145d18a46f17fb87c8a241a5b6aadec992086fd2ccb0f3bc01f71412d4099a
82 Risk Score

Malware Insights

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

The document uses a lure related to a compromised Roblox account to trick the user into clicking a link. The presence of a download button and password archive lure heuristics further suggest a malicious workflow. The primary malicious URL identified is https://netcdn.tw/app/431946152/me-hackearon-la-cuenta-de-roblox-game-hack, which likely leads to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/431946152/me-hackearon-la-cuenta-de-roblox-game-hack
    • https://perpustakaan.stifar.ac.id/repository/coin-master-free-cards_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-extra-spins_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/cheats-coin-master-free-spins-and-news_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-2021-no-survey_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-2021_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-accounts-2021-may_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/where-tiktok-free-views-app_GM835599320.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-roblox-card_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/roblox-new-hack-exploit-2021-still-works_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/coin-master-homepage_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/minecraft-java-free-download_GM479516143.pdf
    • https://perpustakaan.stifar.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/best-free-hacked-client_GM479516143.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/pubg-uc-free_GM1330123889.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-t-shirt-roblox_GM431946152.pdf
    • https://perpustakaan.stifar.ac.id/repository/free-spins-coin-master-2021-app_GM406889139.pdf
    • https://perpustakaan.stifar.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fc5.bin
83c0266f798aa83e0e77b8e651c1c887f48484b656409c7b81191c198b2f61f7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FC5 26072 bytes
font_01_sfnt_off00008b27.bin
e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B27 2908 bytes
font_02_sfnt_off00009520.bin
575f2dca58e3c3e4547424ced2ef652d7d3315147af0d8ca0ca4f94d9cb12356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9520 18792 bytes

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