Malicious PDF — malware analysis report

Static analysis result for SHA-256 df4474ba12715f17…

MALICIOUS

PDF

47.4 KB Created: 2020-08-30 04:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ac6a580ce1b216cbba03c1435533f30 SHA-1: b72ba3dcf26925d1eccbaff19f87d34349a4538d SHA-256: df4474ba12715f17f583a490ca400b13bcc1502455f59ad0e727d58fa9efba76
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a domain associated with malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. This suggests a social engineering attack aimed at directing users to malicious content.

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/wix?keyword=el+buho+que+no+podia+ulular+pdf+grat
    • https://static.usrfiles.com/ugd/cc14e4_2390899044f7447e9e19d036718557da.pdf
    • https://static.usrfiles.com/ugd/b8c837_931200a67fff4940b176ef1a7a5e02f0.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_bf12d822a9a24a038cf082ccc0fe5a95.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d8d7c779b9446f986a607340739f313.pdf
    • https://static.usrfiles.com/ugd/eb4c03_8001200b0dde4a2a8b6761c9e052cd6d.pdf
    • https://static.usrfiles.com/ugd/affb4a_b9dc640d673d41538735fb5ca0c346d0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b58bd7371b9e4bb192edae163889cf27.pdf
    • https://static.usrfiles.com/ugd/b8c837_4bda2b2792294a46a4d80023fb5bdc56.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf6d042501604a5ab710fa21e3333053.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad01e4458ed1442e9f2792d5686f9ff2.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/pupomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/silelesunekufowufanelo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/2020_ashrae_handbook_hvac_applications_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/1944/0028/files/libros_de_instrumentacion_quirurgica_en_enfermeria.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6556/files/bafefefeti.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_off00006b31.bin
4d05a4f9fd761b302e20ad4b44d5cfcdb229f6b8355249d0a40a2a3e60990545		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 3260 bytes
font_01_sfnt_off000076c1.bin
5931ae02edf7fea92b8dafecba6f82969bcbb86b1b8ca389fd1412591bc7e0fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C1 5348 bytes
font_02_sfnt_off000088dd.bin
910f8304b1d576e6bf8f93e1da0d5aa611f2d43197ed122880fa9210d9f92da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88DD 11708 bytes

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