Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f246f5b25785e55…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 19:33:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 69f6a266a083ace84cec3db9a4d627d1 SHA-1: 02f238f602ee6cd4631797e60ed4f232060f12ec SHA-256: 4f246f5b25785e55c962a53272aab403315ca2a132bff6f056bbffdd423e3131
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm or content aggregation tactic. The document body and extracted URLs indicate a lure related to game cheats and hacks for popular games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to trick users into visiting potentially harmful sites or downloading further malicious content.

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/how-to-put-e-free-o-roblox-game-hack
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-robux-hacks-no-verification_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-fan-page-free-spins_GM406889139.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/how-to-get-builders-club-on-roblox-for-free-2021_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-hack-ios-jailbreak_GM406889139.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/daily-free-spins-coin-master-2021_GM406889139.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/gravity-switch-hack-roblox_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-hide-and-seek-extreme-hacks_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/fps-roblox-hacks_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/minecraft-free-minecraft_GM479516143.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-robux-no-verification-or-survey-or-download-2021_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-sketch-roblox-hacked-client_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/amazing-hacker-names-for-roblox_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-roblox-accounts-bugmenot_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/free-hair-in-roblox-all-names_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-hacked-remotes_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/roblox-fun-com-free-robux_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/roblox-free-flight_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id/repository/dust-trust-roblox-hacker_GM431946152.pdf
    • https://digilib-akuntansi.stkip-pgri-sumbar.ac.id//repository/coin-master-reward-link-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d2.bin
33100bf2654df08f3fcd79dc79bc3f720621b4f3b3ff97187a92fa5a4be70b39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30D2 22376 bytes
font_01_sfnt_off00006263.bin
d4e41abdb294fce45b57ca75b9b921f8951b0a2c793ac54abb785d5f82423741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6263 19212 bytes

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