Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5b9ec98d873fcb…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 10:57:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 55a2d9c99efbf77eb376103ae6b648ea SHA-1: ac86d951c0d7bf1d7d7c2cc6435ead36e84abd46 SHA-256: 9e5b9ec98d873fcb79128acd9c3c590961b520a968625a59f1dbaa823982e1ac
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats, suggesting a lure for users to download malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent. The document's content and structure indicate it's designed to trick users into clicking links that likely lead to malware or exploit delivery.

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/hack-roblox-admin-commands-list-game-hack PDF link annotation
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/admin-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/hack-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/roblox-infinite-health-hack-gary-s-hood_GM431946152.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/corn-master_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning10.man1kotalubuklinggau.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_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_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 21620 bytes
SHA-256: ce245fb944f33a132f80e7809b33c18c02b7c0cb5fd9f9c71c1b94931c8ea5f8
font_01_sfnt_off000061dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DC 19316 bytes
SHA-256: 7c9d80dc28e9d75523154cc66f21e5924fd87e515c28998eff9cf846abbe3b0c

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