Malicious PDF — malware analysis report

Static analysis result for SHA-256 3566658a9b2a0162…

MALICIOUS

PDF

47.3 KB Created: 2020-08-25 14:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b26a6bae6cd48396f9ca643b70a68e1 SHA-1: aef64a1e186b2b0b1197ab335dff8cb4f2e35bdd SHA-256: 3566658a9b2a01620ee7d675930f460289a0fbd69a6dc571fe6a6cf8d16412cf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the redirector. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=dearly+beloved+soft+edition+piano+sheet
    • http://kojib.posterworksgallery.com/uploads/1/3/0/9/130969723/xawekiputosipek.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/know_your_customer_form_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/tunimudefalibugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9506/files/1987722061.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/79753148256.pdf
    • https://cdn.shopify.com/s/files/1/0430/5515/3303/files/99598376898.pdf
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/aspectos_psicosociales_del_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6908/files/alternative_dispute_resolution_bare_act.pdf
    • https://cdn.shopify.com/s/files/1/0431/5090/1402/files/monapetovagupitejabe.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/xurevegozamiseloginidez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7737/7958/files/penigakutawezapumuburi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5193/files/hubspot_marketing_automation_platform.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d32.bin
81bf6332002e554789405f9327fd55909305235f4a8e9f09e1d5d014a127e1e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D32 5216 bytes
font_01_sfnt_off00006eeb.bin
0135bd78dc02767bb5fb34d777619b20584582ebb92aa1804aa1bdca210c5092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEB 16332 bytes
font_02_sfnt_off0000a19e.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA19E 4324 bytes

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