Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f55b96958693df…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 12:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 11297823336016086cbcd2870f7d2d8c SHA-1: 7f0018f012b11235fd764501b8840a1c02f13f31 SHA-256: 04f55b96958693df7a9b0361b2072df42445f781ad2e90e7fe7b2c2f4a235dc1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, including a direct link to a potential executable file, and exhibits characteristics of a link farm designed to attract users with game-related lures. The ML classifier strongly indicates maliciousness, and the presence of a 'download button' heuristic further supports a malicious intent to trick users into downloading a payload.

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/autospin-hack-roblox-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-gravity-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tiktok-free-download-for-iphone_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/da-hood-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/speed-run-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-accounts-2021-december_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-sites_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/serena-ryder-wild-and-free-id-roblox-code_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/2021-free-robux-daily-com_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_off00002e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E39 22288 bytes
SHA-256: f50576cd623f5f96001356c4c6aac3f184928c5be299c6d272513c31fb648f89
font_01_sfnt_off00005fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD9 19196 bytes
SHA-256: 96ea9a79e1636ad725ef9f45862676352312c93b7421008e5871a33654d05503

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