Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce7cd01e1997cd6…

MALICIOUS

PDF

42.0 KB Created: 2021-05-17 09:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c2f82d7d0eea35f493be8a8f6706ae4b SHA-1: f4c48f84634471ccb96668ce4918f781951cad82 SHA-256: 9ce7cd01e1997cd6125aa8710fa45b80a77aa8b28ba231bedb3732b596452350
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which point to external websites. The document body also contains a direct link to 'https://netcdn.xyz/app/431946152/buy-robux-free-game-hack', suggesting a lure for users to click through to potentially malicious content or scams. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/buy-robux-free-game-hack
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/get-free-spins-coin-master-2021_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-spin-link-today-download_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-minecraft-gift-codes_GM479516143.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/hack-coin-master-no-human-verification_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-many-levels-are-in-coin-master_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/hack-coin-master-apk-33_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-spins-coin-master-links-twitter_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/80-free-spins-coin-master_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-game-hack_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/wurst-18-9_GM479516143.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/free-minecraft-account-reddit_GM479516143.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/hack-coin-master-download-ios_GM406889139.pdf
    • http://digilib.akbid-alsuaibah.ac.id/repository/coin-master-gift-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000492e.bin
5279b0f0aa15f6f6394d36025972f73c78941ed320abe168385ab7b99b3234b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x492E 25212 bytes
font_01_sfnt_off00008203.bin
cb12c4d5dde36c76c1d8ec5571b03ead83a0fa8ffdaffe515056ff0ebc75f1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8203 18196 bytes

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