Malicious PDF — malware analysis report

Static analysis result for SHA-256 5223cc27e6320124…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 01:50:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5766471bf0ef808374a3108a38c805db SHA-1: c85485c436d5316776dd9d62a1a07ba13eb4ff3a SHA-256: 5223cc27e6320124d77004256f20f8fc8d9a2a5d99a59358afc0c9fa80b27da6
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are structured as SEO-optimized links to other PDF files. The document body and extracted URLs suggest a lure for game cheats and hacks, such as for Roblox and Coin Master. The ML classifier and PDF link farm heuristics strongly indicate malicious intent, likely to redirect users to malicious content or downloads.

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-jailbreak-noclip-hack-feb-2021-game-hack
    • http://daskrimti-jabar.web.id/library/repository/roblox-song-id-hack-script_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://daskrimti-jabar.web.id/library//repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library//repository/roblox-cheat-codes_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library/repository/roblox-hack-peolple_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library//repository/get-robux-today_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library//repository/free-robux-come_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://daskrimti-jabar.web.id/library/repository/free-robux-without-doing-anything_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library/repository/mine-minecraft-games-for-free_GM479516143.pdf
    • http://daskrimti-jabar.web.id/library/repository/minecraft-java-edition-free_GM479516143.pdf
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-youtube_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library//repository/free-robux-that-actually-works_GM431946152.pdf
    • http://daskrimti-jabar.web.id/library/repository/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://daskrimti-jabar.web.id/library//repository/coin-master-cheat-free_GM406889139.pdf
    • http://daskrimti-jabar.web.id/library//repository/minecraft-ps4-code-free_GM479516143.pdf
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-no-verification-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c1.bin
a0d10348ddb8525b8fb72f959053872be9b11432fa4acc1791315b6f9196ce53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30C1 22072 bytes
font_01_sfnt_off000061b7.bin
f5d4c30fc990a749a2963126a903be16b271032153ae8f45c75df043325c9fc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B7 19684 bytes

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