Malicious PDF — malware analysis report

Static analysis result for SHA-256 473c078c6f7ad628…

MALICIOUS

PDF

35.2 KB Created: 2021-06-28 20:48:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7289f6f6d3bc0fca74962a7cb4774853 SHA-1: a48208f48bd1583221e7f8616ea15d7346c65782 SHA-256: 473c078c6f7ad6280e4c0b4c0f433fa4e49c9ae7775fef5ec6371fc795c48162
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using the promise of 'Free Robux' and game hacks to entice users. It contains a large number of external links, forming a link farm, that likely lead to further malicious content or downloads. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded URLs supports a phishing or social engineering attack pattern.

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/free-robux-wheel-spin-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/new-roblox-infinite-jump-exploit-hack-working-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-download-pc-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-online-games-no-download-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-star-wars-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-io_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-hack-tool-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hacked-tshirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-hacks-co_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-girl-outfit-codes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-shirts-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-jailbreak-play-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/tofu-costume-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/did-roblox-got-hack_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_off00002ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF2 22888 bytes
SHA-256: 753acf70a0032c047e995b97bc035b8224683c2e14f83818a37ad5df9cfc5540
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 19448 bytes
SHA-256: 0a8760edf6f9ea2eef8bfc6f60d130c9076ba5ab68b36072a8d5a6a29bbaf2d0

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