Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f0d319a64689bf…

MALICIOUS

PDF

44.2 KB Created: 2021-05-20 03:01:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ee82a2b2692c67975245749adc7cf1df SHA-1: 9ba3007b4238301cac777ff0d9a723b59dabf96e SHA-256: 65f0d319a64689bff5b4e2ad55dff3782ed2dbcc20a9bba083f22d3e08488567
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized with game-related keywords like 'free Robux' and 'Coin Master'. The presence of a "download button" lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or initiate further downloads. The document's structure suggests it's part of a link farm designed to attract users with promises of free in-game currency or cheats.

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 https://netcdn.xyz/app/431946152/free-robux-websites-that-actually-work-2021-game-hack
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/village-coin_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-daily-free-coins-link-today_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/worst-client_GM479516143.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/robux-for-kids_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/tiktok-free-download-video_GM835599320.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-use-wurst_GM479516143.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/microsoft-rewards-robux_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-become-a-hacker-in-roblox_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/does-coin-master-hack-work_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e37.bin
f2b37154ee124ac5ac343f6fa4ffd46b83e8481b2ca8432102be5cfbee6a8f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E37 24512 bytes
font_01_sfnt_off0000867d.bin
7b3ca8e33f6ab65cae0b12a773bae5d0e0377a7b1030ef9ec14be3c3cdd71d54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x867D 19656 bytes

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