Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f7e083334c0f90…

MALICIOUS

PDF

35.2 KB Created: 2021-06-20 05:05:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 56869e03d754d5ce672187af8ec8577b SHA-1: ee27e176378d7969e0bdac6d9a71e8d068a46020 SHA-256: 33f7e083334c0f9031693ff909ed5c6ab6ef6a104d0aa58063be53d06d25e090
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded URLs, many of which are part of a link farm designed to attract users searching for free in-game currency or hacks for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' and the presence of a 'download button' lure indicate a deceptive workflow. The ML classifier's high confidence score further supports the malicious nature of this document, likely serving as a lure to malicious websites.

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-get-free-robux-instantly-not-fake-game-hack
    • http://digilibfisip.unla.ac.id/repository/clean-master-free-coins-and-spins_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/minecraft-online-free-no-download_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-download-apk_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-avatar-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/is-the-free-robux-video-real-from-vixter_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/xray-mod-minecraft-114_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-hacks-that-actually-work_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-win-free-robux-on-chest-open-in-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-do-you-get-lots-of-robux-for-free_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/cheat-manager-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/robux-free-co_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/black-clover-online-roblox-hack_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-com-2021_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e3a.bin
dbf733ee855ad154a20a6df9bd482cac111786a098989d8c1046e5212f642358		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3A 24040 bytes
font_01_sfnt_off00006360.bin
72e373dfe37d2f4604510b62d1940fe522b8628250c1e1f0220a536c8d9e73d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6360 19408 bytes

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