Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6cc3ba509cb598…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 13:29:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 16f16ab7b59c27fee3fd571fee7483f7 SHA-1: cc513e4dddf0775bc907802ec89561d3e08e16a7 SHA-256: df6cc3ba509cb598f587a2bcefe20c21fb9e86aa83af9f4c335005fe1e60164f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes 'free Robux' and game hacks, indicating a phishing or scam attempt. The PDF_SEO_LINK_FARM heuristic suggests a large number of external links were generated, likely to distribute malicious content or for SEO manipulation. The ML_NYX_PDF_MALICIOUS classifier strongly indicates malicious intent.

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/free-robux-with-add-game-hack
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-on-roblox-jailbreak-2021_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/jailbreak-download-free-roblox_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-robux-without-human-verification_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-daily-2021_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-roblox-codes-wiki_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/get-free-robux-inspect_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/cool-avatars-in-roblox-for-free_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-yo-get-free-robux_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-cp_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-life-hacks_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-apocalypse-rising-hack-october-2021_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-spins-for-coin-master_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-cards-hack-2021_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-robux-in-60-seconds_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-game-free-spin_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-free-robux-hack_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000303d.bin
b117dfb23be821f02339592e936aba6a8b8eebfbeac36a0cf2a89ffc45fcc382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x303D 21924 bytes
font_01_sfnt_off0000608b.bin
88859b4c7061751d9ca98542d4c36076cc179a89c3a2bf8fb2d9619d1aec4850		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608B 19476 bytes

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