Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec5417b4c1ad3b48…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 07:31:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 66fd41b4423067e3ea532c12da07574d SHA-1: adbf2c3d56fd04f505f90db5656f7313536cca12 SHA-256: ec5417b4c1ad3b48a1347a55030402a01c9fc91736809e0e2f1ea4b3b89d12f3
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, many of which are presented as download lures for game cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a potential attempt to redirect users to malicious sites or download unwanted software. The ML classifier also flagged this PDF as malicious with high confidence.

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/cheat-in-roblox-gold-venture-game-hack
    • http://elib-s2.ubl.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-roblox-gift-card-codes-2021-unused_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-dungeon-quest-rapist-hack_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-tiktok-video_GM835599320.pdf
    • http://elib-s2.ubl.ac.id/repository/nonsense-diamond-roblox-hack_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-cheat-engine-tycoon-max-money_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-be-a-hacker-on-roblox-ipad_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/get-free-robux-com_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/survivor-cheats-roblox_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/code-roblox-for-account-hack_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-robux-codes-2021-october_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/how-to-get-bc-for-free-on-roblox-2021_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdf
    • http://elib-s2.ubl.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://elib-s2.ubl.ac.id/repository/free-roblox-accounts-made-50-days-old_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/hack-exploit-roblox-2021_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/roblox-free-hair-promo-codes-2021_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/best-free-dominus-in-roblox_GM431946152.pdf
    • http://elib-s2.ubl.ac.id/repository/get-minecraft-windows-10-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa7.bin
3876626ceefdac3ef13dd1495fbfb9c97402e987122c1373e91c77206c505f83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA7 22332 bytes
font_01_sfnt_off00006178.bin
0927755e854240678c4bdcde69c877dcac99048e32830ae9135934343499f953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 19204 bytes

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