Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f753863029d3dae…

MALICIOUS

PDF

36.4 KB Created: 2020-03-25 12:11:39 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 63867128b9a29f96178a2b6466d74ee5 SHA-1: 85401e60a4d587f01fe67d304ec0b1e351a0c467 SHA-256: 8f753863029d3daee896b8b16fb7a33a258c6d9c70ccb7df123a3af3a9ec680a
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links likely serve to direct users to malicious content or to manipulate search engine rankings. The document itself contains garbled text and metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, which aligns with the link farm attack pattern.

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://stopcolorism.org/uploads/1/3/0/6/130640067/130640067.html#identificacion+del+sistema+de+calidad+definicion+y+caracteristicas
    • http://john-kuniversal.com/uploads/1/3/0/6/130621248/wifewupovudil-kugakixiroz-kalunezos-tinuwepiwosumux.pdf
    • http://thrive-network.com/uploads/1/3/0/8/130814909/bikumejel-sibiwepedukol-nosir.pdf
    • http://www.promelanininc.com/uploads/1/3/0/9/130969656/pifezipidiviripetuva.pdf
    • http://humananalyticsconsulting.com/uploads/1/3/0/3/130313127/tewureg_pirisexaf_migerabotas_vavivopa.pdf
    • http://www.riverbendbaptist.net/uploads/1/3/0/3/130313294/tulubu_roviwumemafap_guxik_fopog.pdf
    • http://mywritingcheck.com/uploads/1/3/0/6/130603749/e7cab039.pdf
    • http://michellecmcadams.com/uploads/1/3/0/6/130620492/3e9ced2eeb.pdf
    • http://op1620.com/uploads/1/3/0/6/130605368/7137835.pdf
    • http://starboardopportunitypartners.com/uploads/1/3/0/7/130775242/e3b757b1.pdf
    • http://pacificwestuniversity.org/uploads/1/3/0/5/130546486/2c2035ef572d2.pdf
    • http://sharethedignity.com/uploads/1/3/0/7/130775260/fixezevegaduwo.pdf
    • http://bridalgownsinma.com/uploads/1/3/0/7/130776626/varuduloxunofovivux.pdf
    • http://my-express-taxi.com/uploads/1/3/0/6/130621248/fc9df.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_off000066a7.bin
1deff01393e3aaf620446f48ca0bfeae6ecb1694ca5b4338cb8c5546857c6246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66A7 7412 bytes

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