Malicious PDF — malware analysis report

Static analysis result for SHA-256 47cf48fa26403751…

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 11:35:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 937a1cb9ae1928b9742645cdbf0595be SHA-1: 8e7c7aee6276bb993e5eca82e7f3ff3894dfe846 SHA-256: 47cf48fa26403751f50f58a0924e221f1216f330eff44a7e2224087ea1c87e8f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the presence of embedded URLs and the PDF structure suggest an attempt to drive traffic to potentially harmful content, possibly related to game cheats or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-torso-position-cheat-engine-game-hack
    • https://elibrary.ikhac.ac.id/repository/free-roblox-game-robux_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/appsmob-coin-master-hack_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/coin-master-pet-food-free_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/roblox-most-hacked-games_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/coin-master-ids-for-free-spins_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/robux-generator-no-verification-2021_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/cheats-for-coin-master_GM406889139.pdf
    • https://elibrary.ikhac.ac.id/repository/free-tiktok-followers-without-verification_GM835599320.pdf
    • https://elibrary.ikhac.ac.id/repository/can-pokemon-go-free-incense_GM1094591345.pdf
    • https://elibrary.ikhac.ac.id/repository/roblox-money-hack-exe_GM431946152.pdf
    • https://elibrary.ikhac.ac.id/repository/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdf
    • https://robuxhaxs.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050a8.bin
8c7896df44176807c27c9feb1965ddd573832cd9f63dbcbacb5e4aa70a1e2df1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A8 26192 bytes
font_01_sfnt_off00008b15.bin
e7bdbffb188cb70408a3c7e791595218e34caaba9908c582201e796429d8e0e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B15 18844 bytes

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