Malicious PDF — malware analysis report

Static analysis result for SHA-256 25eb2328f29f01cc…

MALICIOUS

PDF

39.3 KB Created: 2020-04-12 12:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9576e9662db696f23f8f332eb6077458 SHA-1: 61243bfbec37ef542659f7bff2f8a047a1b01853 SHA-256: 25eb2328f29f01ccad163fb9c6965d62e54e793ad4c6d71d1692ca5755ee14c8
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a redirection scheme designed to funnel traffic to potentially malicious content. The document body itself contains garbled text and a reference to the wkhtmltopdf tool, suggesting it was programmatically generated. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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://learnosoft.org/uploads/1/3/0/9/130969381/130969381.html#ejemplos+de+oracion+gramatical+con+sus+partes
    • http://spreadinggoodnews.com/uploads/1/3/0/5/130540458/jabitixofalitagulap.pdf
    • http://debsia.com/uploads/1/3/0/2/130271131/juwojodop-duvulodizagaw.pdf
    • http://condoinsurancespecialist.net/uploads/1/3/1/4/131455475/raruzofu_zilof_gimoxelopi_gomewoliwimosa.pdf
    • http://stylebeyond.com/uploads/1/3/0/6/130620538/08f261a467ee.pdf
    • http://pwc-tax.com/uploads/1/3/0/8/130813975/kumak.pdf
    • http://bulletandco.com/uploads/1/3/1/3/131384250/a17ed.pdf
    • http://project-ppe.com/uploads/1/3/1/3/131383908/baxed.pdf
    • http://coachjenclark.com/uploads/1/3/0/9/130969019/vabugepijumavo_lupijililepu_bamewamazenid.pdf
    • http://kazcreations.org/uploads/1/3/1/3/131379696/tawubogujofa.pdf
    • http://manufacturingcommunities.org/uploads/1/3/1/4/131453684/lekagetix.pdf
    • http://comedyandcabaret.com/uploads/1/3/0/6/130605122/7681569.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f2d.bin
9bf1982de07c28a84287d4d95542cfa43e985a629b7e07ef60e93a15f1c40e19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2D 8912 bytes

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