Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eed3ea117ea6b08…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 02:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0c23c4a79d83ec2a25159297d71d5874 SHA-1: 22b4ba6814367fd5641d2d891d4a9897c7ae6041 SHA-256: 4eed3ea117ea6b08e6a1d596915e926b4c5a5c57971b31f9fae1d33979de4d41
142 Risk Score

Malware Insights

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

This PDF document employs social engineering tactics by presenting itself as a download for popular games like Minecraft and Coin Master, with embedded links directing users to a link farm. The document body and numerous extracted URLs suggest a lure to download potentially unwanted or malicious software. The 'ClickFix' heuristic indicates the document may also attempt to trick users into executing commands directly.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/minecraft-world-free-download-game-hack
    • http://lib.uho.ac.id/library//repository/moonactive-coin-master-free-spins_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-mod-version-free-download-34-4_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/blogspot-coin-master_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/free-robux-2021-no-human-verification_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-twitter_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/how-to-coin-master-hack_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-free-spons-apk-2021_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/roblox-free-rubox_GM431946152.pdf
    • http://lib.uho.ac.id/library/repository/free-robux-no-verification-no-download_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/spins-for-coin-master_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdf
    • http://lib.uho.ac.id/library/repository/roblox-rewards_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/unlimited-robux-2021_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/what-do-roblox-points-do_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/free-promo-codes-roblox_GM431946152.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-free-spin-link-app_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/coin-master-heaven-free-spins_GM406889139.pdf
    • http://lib.uho.ac.id/library//repository/roblox-hax_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a7d.bin
39d8d9b3a9576469c9a9d411128be43a1721791496484a8fd91b38b836de6fed		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7D 25264 bytes
font_01_sfnt_off000083eb.bin
53d97953320c4a27ca75ab54c15cccabcbe94f1a7eef6df1be3b25df4f56750c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EB 18488 bytes

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