Malicious PDF — malware analysis report

Static analysis result for SHA-256 7edfff66d827cff9…

MALICIOUS

PDF

48.3 KB Created: 2021-06-04 01:17:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 45934d6d4481f78e139fd1f03e5a9301 SHA-1: db9d799b5438cb2aadb311fae4655071c1f71399 SHA-256: 7edfff66d827cff919b7fa6c03c2ccdb98e591fb5de3f135a1674e600dbe2409
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a 'PDF_SEO_LINK_FARM', pointing to various 'free Robux' or 'Coin Master hack' related URLs. The document body, though partially corrupted, contains a clear reference to 'Free Robux Games That Actually Work 2021' and a URL hosted on 'netcdn.online'. This suggests a phishing or scam attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.online/app/431946152/free-robux-games-that-actually-work-2021-game-hack
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-game-pack-coin-master_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-34-4-hack_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-app-real_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-roblox-gift-card-codes-no-human-verification_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-hacks-ps4_GM479516143.pdf
    • http://digilib.akbidarrahma.ac.id/repository/monttechscom-coin-master-free-spins_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/robuxy-com-generator_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-sites-that-work_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/can-u-get-free-robux_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-redeem-code-for-coin-master_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdf
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005496.bin
05cb44c4c0aa44c1976881699ef69270dea8c25f2a83787cf54f200ffbd0ab3d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5496 28624 bytes
font_01_sfnt_off00009610.bin
825df7cf396e8d9c124972fb8483e304b72a256d7e3507e7d5ad5df48b88867f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9610 19796 bytes

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