Malicious PDF — malware analysis report

Static analysis result for SHA-256 5effb549636819f0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 04:51:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8ff7fe8b649084c819ea99e79291fb7b SHA-1: 2a0842dc709f4f15c14eaa940b963f905f1489ed SHA-256: 5effb549636819f09757e0cb948e251a9abc27a6b0958733a8e1bc89b3661eb1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links to external resources, many of which are related to game hacks and cheats, such as "Roblox Free Robux Hack". The presence of a large number of external links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's structure suggests it is designed to act as a lure, possibly leading to malware download or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-free-robux-hack-without-human-verification-game-hack
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/minecraft-creative-mode-free_GM479516143.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/hacks-in-roblox-jailbreak-2021_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/c7-roblox-hack_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/can-roblox-detect-cheat-engine_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/roblox-games-with-free-vip-servers_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-download-hack-ios_GM406889139.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-spins-coin-master-blogspot_GM406889139.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/free-vip-server-for-roblox-gravity-shift_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-coin-master-spin-and-coin-link_GM406889139.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/coin-master-free-link-spin_GM406889139.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/free-roblox-templates_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/optifine-mcpe_GM479516143.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/all-links-for-free-spins-coin-master_GM406889139.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id/repository/roblox-brocken-bones-4-ban-cheat_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/roblox-gang-rape_GM431946152.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdf
    • https://digilib-ppkn.stkip-pgri-sumbar.ac.id//repository/roblox-fun-robux_GM431946152.pdf
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003207.bin
c315b322f935180ea49c31de83a23d6dcef173da3bd75269be648c50e5a51bfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3207 21476 bytes
font_01_sfnt_off0000612e.bin
bc3e1342fefdfd68a0e2a73de2247f10d8bf83ecf2b43a8e17039b6318584040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 19944 bytes

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