Malicious PDF — malware analysis report

Static analysis result for SHA-256 2083379b09cd85a1…

MALICIOUS

PDF

35.0 KB Created: 2021-06-20 11:10:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 88513e850a41f8441a7989ffa4d56942 SHA-1: 68441acb3c224c3d369ad3a0afabbf567e9bb18e SHA-256: 2083379b09cd85a17a4e68cc97f32d15629ba2e5542e86f9ef7b56456f2eead0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized pages offering 'free Robux' or game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent to trick users into downloading unwanted files. The document body itself contains URLs that are likely part of a link farm designed to attract users searching for cheats or 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/free-robux-hack-generator-pc-game-hack
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-hack-codes_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-do-you-hack-roblox-accounts-2021_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/new-free-money-links-coin-master_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/is-there-a-legit-way-to-get-free-robux_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/download-hacks-for-roblox-cheating-in-assasin_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-avatar-maker-free_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-adopt-me-free-pets_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/pubg-uc-png_GM1330123889.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-wall-hack-in-roblox-jailbreak_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-coin-master-links_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/get-free-coin-master_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-draw-2-roblox_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-free-coins-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030ac.bin
0278980116323f995bca8c2811c188b9840d397e8a0624ee0255d7c5866d7378		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30AC 22812 bytes
font_01_sfnt_off000063af.bin
3a65222f241df325d8d1d87b4142453c3bfe7411ea1e430ec39f99c16b08a5ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AF 19144 bytes

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