Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb647115aa4c368…

MALICIOUS

PDF

34.8 KB Created: 2021-06-17 17:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cfcc33e33415d60014e0adffe3718f9c SHA-1: 3026a9348ada1fd70e714c70fb1faeaf34dcd7b7 SHA-256: 0fb647115aa4c3688afbd3a0495abeeb11680a94bd9c87f83a281c0e863aad9c
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that promotes free Robux and game hacks, indicating a lure for users to download further content. The heuristic PDF_SEO_LINK_FARM firing suggests a large number of external links were generated, likely for SEO manipulation to attract victims. The ML classifier also strongly indicated maliciousness.

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/free-robux-gift-card-codes-2021-july-game-hack
    • http://digilibfisip.unla.ac.id/repository/roblox-bloxburg-money-hack_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-2021-hack_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/pro-free-spins-coin-master_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/hacks-para-roblox_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-funny-roblox-outfits_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-no-virus_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-robux-real-working_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-coin-master-spins-link_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-items_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/free-roblox-code-generator-no-human-verification_GM431946152.pdf
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdf
    • http://digilibfisip.unla.ac.id/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002deb.bin
a3e80c4675e4638d3516349619c7a83a7b3766cfb25fb8a65c131efd72946d53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEB 22444 bytes
font_01_sfnt_off00005ff7.bin
594436524b077f7b97ddafcb56ab2e97080f019c6792fd5a6e181cb1479b05e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF7 19936 bytes

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