Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbf54c468f9b9d95…

MALICIOUS

PDF

44.4 KB Created: 2021-05-03 11:49:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cded77eaedcb8808f145d818adef4c5b SHA-1: 7cbd944f5536c5df252a2e3060e289cb65370819 SHA-256: dbf54c468f9b9d95340225cb2f574e54c1519bf33f5feba48a7c8da162f31f16
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'Robux for free' and 'Roblox hacks'. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs suggest a phishing attempt to lure users to scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-for-free-for-roblox.com-mobile4free24.com-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-with-cheat-engine-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-rocket-fuel-in-roblox-jailbreak.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-use-free-models-on-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-robux-hack-online-generator.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-make-shirts-free-on-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-no-verification-no-survey.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-online-on-jailbreak.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-become-a-hacker-on-roblox-jailbreak.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-dbn-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-shirt-roblox-avatar.pdfIn PDF document text
    • https://freerobux.cyouIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000043f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43F0 26516 bytes
SHA-256: 25cc0ec1e88b7cfef709fce50831fd821d946f43bb932148fa261ba0825cb9db
font_01_sfnt_off00008044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8044 2848 bytes
SHA-256: 4737c2778a085e0cb49e73f3b054b1a71e3f40720d213b4bfda97f95a31bfbf1
font_02_sfnt_off00008a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A06 18916 bytes
SHA-256: 7061e933453795fbc3f570536637d91fbdad6684d7b243381ab547989d1c54e5

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