Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee1fe70ec4e216d…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 05:18:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 475e168969fcc10efce7aaf28dd66d7e SHA-1: c850d56649fcb580d3331e3e85b1714ff5782234 SHA-256: 7ee1fe70ec4e216db534851a630a7a5b899a465885fbd629151d4a8d8b44d888
102 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are structured as a link farm for SEO purposes, pointing to game hack-related content. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate malicious intent. The primary goal appears to be directing users to external sites that likely host further malicious content or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.online/app/406889139/coin-master-hack-cydia-game-hack
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/pubg-uc-not-received_GM1330123889.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-robux-generator-tool_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/robux-hack-generator_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/how-to-hack-coin-master-2021_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/cmaster-club-coin-master-hack_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/is-minecraft-free-on-ps4_GM479516143.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/games-in-roblox-that-give-you-robux_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/2021-free-spins-coin-master-link_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-sexually_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id//repository/buy-robux-free_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/free-spins-promo-code-for-coin-master_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/android-coin-master-hack_GM406889139.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/roblox-cheat-codes_GM431946152.pdf
    • http://etd.ilmukomunikasi.fisip.ulm.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005299.bin
b446b5611aa6152355f0c1dc20ba9ab7bdc607a54c2e6355bd03d6c216012d5b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5299 27044 bytes
font_01_sfnt_off00008f3a.bin
4738d241759e4cff2f8f871975220420d30bcacc60cdf6fe40909b1f8f62f8b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3A 18072 bytes

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