Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d03becc379450a…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 20:38:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d59e4dad3e43f79ec88edebc881ea82a SHA-1: e828064efacec68edf3a4e91253b00b0dea99021 SHA-256: 44d03becc379450afd135cf1fb1deef69ad1bf4a8d562c8f2c4b35f75ab3a050
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are SEO-optimized and point to websites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous links to potentially harmful content suggests a lure for users to download malware or visit phishing sites. The document's content and structure align with a link farm designed to attract users searching for game exploits.

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/roblox-free-50-robux-game-hack
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-glasses_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hack-to-get-the-legendary-pet-in-adopt-me-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-websites-that-work_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/counter-blox-roblox-offensive-hacks-2021-v3rmillion_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-mad-city-free-car-glitch_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-youtube-how-to-play-bloxburg-for-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hacks-deathnote-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/claim-free-robuxcom_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-dorm-life-on-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/secret-robux-hack-subscribe-to-make-it-works_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-mining-roblox-hack-roblox-hack-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-unlimited-free-robux-and-builders-club_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/shirt-codes-for-roblox-free-shipping_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-youtube_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/comment-hacker-mad-city-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/comandos-para-hackear-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-admin-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003042.bin
5499bc4e72ea36be4ff977f211096248e0a827a8b3c2058ea913c473297715ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3042 21820 bytes
font_01_sfnt_off0000605b.bin
b0e774f6d20f98f0abd0edf0d1b733fac7f2aa8abe4664e4c65dabade4c72561		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605B 19096 bytes

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