Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd50ea5287af13d4…

MALICIOUS

PDF

42.5 KB Created: 2021-05-10 21:03:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d2e5fe0d52a47faf8ffbb094b9103896 SHA-1: c0f1df4900a1542829e1654291b3508d99273b17 SHA-256: dd50ea5287af13d417715a91a66dbcb71af54c10e4e9bc2fc563ade76cc66f03
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are structured as SEO link farms for game hacks and free currency. The document body and extracted URLs strongly suggest a lure for users seeking cheats for games like Coin Master and Robux. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/coin-master-date-and-time-hack-game-hack
    • https://digilib.widyagamahusada.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-hacks-for-coin-master_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-spins-haktuts_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-no-gift-card_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-minecraft-java-code_GM479516143.pdf
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdf
    • https://digilib.widyagamahusada.ac.id/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-xbox-360-free_GM479516143.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-spin-link-today-50_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-link_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/collect-free-spins-for-coin-master_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/get-free-cards-in-coin-master_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdf
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-mac-free_GM479516143.pdf
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-ps3-free-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c6.bin
bf410911fd0079b4b90ee36e76a66a035e6f1f09fbe40e9e592d9f4bcd741df4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C6 25000 bytes
font_01_sfnt_off000083bb.bin
7bb22083c9314811711c29236537d9b39d24df6e47e77b9ae9fc3b3f4254db81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83BB 18316 bytes

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