PDF static analysis report

Static analysis result for SHA-256 8d2fc3456d24e4bd…

SUSPICIOUS

PDF

47.6 KB Created: 2021-04-26 01:25:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 28e72963dc8b770cd303f1a2e9b20ea0 SHA-1: 523a12ce522cd607f872577ed4c3bbacaea67b49 SHA-256: 8d2fc3456d24e4bd8330592d7c52398f37b7b098f8acd030eebe831b82bf3f2d
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, one of which is directly referenced in the document body, suggesting a lure to download potentially malicious content. The ML classifier also flagged this PDF as malicious. The presence of a 'download button' heuristic further supports the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 3

  • 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/animation-pack-roblox-free-game-hack PDF link annotation
    • https://bioscience.kyst.com.tw/image/data/files/roblox-titanic-infinite-points-script-hack.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/soros-italian-restaurant-free-roblox.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-roblox-lvl-7-download.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/cheat-engine-roblox-lumber-tycoon-2-table.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/how-to-hack-roblox-and-fly.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/free-robux-march-2021.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/no-survey-anti-bots-allowed-robux-hacker.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/how-do-you-get-free-money-in-roblox.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/cool-outfits-on-roblox-for-free.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/roblox-script-executor-free-download-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000415e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x415E 25896 bytes
SHA-256: af16c93236544107e2de94e0cf0902c753670652df2924cf338b433287efaa14
font_01_sfnt_off00007b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B40 11440 bytes
SHA-256: 154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e
font_02_sfnt_off00009661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9661 18984 bytes
SHA-256: bb348a919786ef63fa891b51f37357eaf93302fa5cec4eea7ed7b738dc01af02