Malicious PDF — malware analysis report

Static analysis result for SHA-256 5699509b225e0ef0…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 18:30:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 53e804a6e925864e32ae119bd7d9e137 SHA-1: 9387e2c5320a1dc364ddd4c0b51a7e955408d248 SHA-256: 5699509b225e0ef0033b87c48465270bc2399eb90f985ec4c8d83c71b5d309d3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on opac.itp.ac.id and appear to be part of a link farm designed to attract users searching for game cheats and hacks. The primary URL http://netcdn.co/app/431946152/how-to-get-admin-on-roblox-2021-no-hacks-game-hack is also present, suggesting a potential download or redirection to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious purposes.

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/how-to-get-admin-on-roblox-2021-no-hacks-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/vheachle-simulator-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-offsale-items-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/pokemon-go-free-event-box_GM1094591345.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-peoples-account-on-roblox-2021-100_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-game-cards-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-gift-card-codes-2021-november_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/vehiecle-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/stop-it-slender-roblox-code-for-free-outfit_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-hack-site-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-name-change-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-at-roblox-wall-hack-cbro_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-checkmein-free_GM431946152.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_off00003129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3129 22124 bytes
SHA-256: ddfb3533923f53d64cc6d893bab8be4af06fc7c271bcfb51355b28d370e39dd4
font_01_sfnt_off00006225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6225 19880 bytes
SHA-256: 7a82a9887a0cbc3dbd29ef1b91f2df1b3780f8a1059a53342d01e3ffe00e9f44

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