Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade3ac4a49f94b41…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 13:28:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a0d21080a018dfa0966a3e6b4ef88538 SHA-1: 4ae8525a9b35375ec0e5aca582e11fc651c090df SHA-256: ade3ac4a49f94b41785cf3435bf46de801921f0beae7b9906464d021c4114c7d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains numerous embedded URLs and a document body that explicitly mentions 'Roblox Com Free Robux' and 'free robux game hack', indicating a phishing or scam attempt. The presence of a clickable URI pointing to a raw IP address and multiple URLs related to 'free robux' and 'hacks' strongly suggests a lure to download malware. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/431946152/roblox-com-free-robux-game-hack PDF link annotation
    • http://118.98.227.172/opac/repository/oprewards-free-robux_GM431946152.pdfPDF link annotation
    • http://118.98.227.172/opac/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/https-www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-instantly-get-free-robux-in-roblox-oprewards_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/comment-hacker-roblox-accesoir_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/donwload-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-free-robuxapl_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/give-me-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-hack-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/hack-tools-for-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-any-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/games-that-gives-free-robux-2021-july_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BB 22356 bytes
SHA-256: 18a4dfedde58e321d320ba244e13cbd7db1dace4bfd44e1d104ac59eb2d27c56
font_01_sfnt_off0000628d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628D 19052 bytes
SHA-256: c7437b3e7bd48948350c0c34152667cbccbfce8be2367ca38aabcff84c85cc8a

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