Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf1d016cffb67bf…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 23:40:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4fa764be98eeeba829b2e48c1844c46f SHA-1: 6c245b0d4e0072c0d73c160675e9a9a79fe8c31f SHA-256: eaf1d016cffb67bf10c5d7422924887266e237f52fbf3034a3fec07a1a6d7313
102 Risk Score

Malware Insights

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

The PDF document contains numerous links, presented as a link farm, that promise free in-game currency or cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'SE_DOWNLOAD_BUTTON' heuristic suggests a call-to-action to download or click. These elements strongly suggest a phishing or scam attempt designed to redirect users to malicious sites.

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/guuud.info-robux-hacks-game-hack
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-obc-in-roblox-within-30-mins_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/generator-robux-free-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/free-coins-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-rewards_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-helmets-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-games-in-roblox-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-instantly_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/hack-coin-master-using-pc_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-do-you-hack-roblox-on-a-phone_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-account-generator_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ad.bin
37fa643e040575768d6daf424a0357b44181536646010fb00a0fe2864e74e945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30AD 21948 bytes
font_01_sfnt_off00006113.bin
42ea8723697edfe4de6b2eb835acf6f3e3cd6a88bf9c1bbff010924c71d71e12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 19080 bytes

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