Malicious PDF — malware analysis report

Static analysis result for SHA-256 0728dbe03967d66e…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 16:05:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b9cf8cec5528deacda4d4d1435ec8dab SHA-1: da884c02f4cd6d806188207dbebc4d0841f5959e SHA-256: 0728dbe03967d66eaa83189d3335a3b3cb3e51b16256ecf75e6290d09be5e125
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are related to game cheats and hacks, indicating a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the heuristic identifying a link farm suggest the document's primary purpose is to redirect users to external sites, likely for malicious purposes such as malware distribution or credential harvesting.

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.tw/app/406889139/haktuts-coin-master-free-daily-spins-game-hack PDF link annotation
    • http://opac.salatigakota.go.id/slims7/repository/buy-free-robux-card_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-lua-scripts-for-cheat-engine_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/scpninetailedfox-mod-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-plates-of-fate-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-free-audios_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/a-discord-server-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-deadzone-item-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-hack-assassin-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-run-faster-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/roblox-mobile-hacks-4-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/can-i-download-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/how-to-get-any-shirt-for-free-roblox-november-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/get-pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7/repository/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-link-daily-get-free-spins-amp_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_off00003191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3191 22676 bytes
SHA-256: 74c8c5603963f9c219a97c10fc4a7e3ef58211da9fed7e0d9fe95a2df9f17286
font_01_sfnt_off00006415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6415 18904 bytes
SHA-256: b7f24531c88ef09d261a29b7b412295c42d9b915df36cfe91f545608b0580658

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