Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f2217e52d1dbfb…

MALICIOUS

PDF

45.9 KB Created: 2021-05-20 01:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 339c9d1689f9b1481c6cbd2b1fecf0b7 SHA-1: e1957c34618e8899cde4677b687bd22d169cb11e SHA-256: 26f2217e52d1dbfbeb2054f47ae566e0b3df799f0fd50ffd1c297b3555f8a0a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are structured as SEO-friendly slugs pointing to 'free Robux' or game hack generators. The document body also contains a prominent URL to a 'free Robux generator'. This indicates a likely phishing or scam attempt designed to trick users into visiting malicious websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-robux-generator-no-human-verification-or-surveys-game-hack
    • http://library-fkip.uho.ac.id/repository/free-robux-easy_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/free-robux-2021_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/free-magical-chest-coin-master_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/how-to-hack-coin-master-pc_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/coin-master-hack-tool-pc-download_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/coin-master-32-android-mod-hack-apk-download_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/wurst-hacks_GM479516143.pdf
    • http://library-fkip.uho.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/roblox-free-robux-generator_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/coin-master-daily-spins_GM406889139.pdf
    • http://library-fkip.uho.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/how-often-pubg-uc-paid_GM1330123889.pdf
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://library-fkip.uho.ac.id/repository/pubg-uc-hack-apk_GM1330123889.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b45.bin
97e3c9b7ae9b44b8954093a8708ddb7c16af376b31174aaed3911ca1ec4aa0bd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B45 25320 bytes
font_01_sfnt_off00008460.bin
baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8460 2844 bytes
font_02_sfnt_off00008e21.bin
b23a4dbd5b2cf0eeb4dbb5626642de4de2979fce29ecd3df28c5d1ef95471ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E21 19156 bytes

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