Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2679bfdb015f52…

MALICIOUS

PDF

52.3 KB Created: 2020-08-06 13:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ca4aaa8becf624d78f00a313d5f9017 SHA-1: f40fbad0ef1c9910894c0f5636fce5cca46a3a00 SHA-256: eb2679bfdb015f52d881b08e46b37a6654f4c85a94e1650fdcf06deec6635361
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text 'Calendario 2020 pdf para imprimir gratis' and the malicious URL, suggesting a lure for users to download a file. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely for SEO manipulation or to host further 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.com/pify?keyword=calendario+2020+pdf+para+imprimir+gratis In PDF document text
    • http://ludixazid.smokymountaintax.com/uploads/1/3/0/7/130738914/lifixazesaveramel.pdfIn PDF document text
    • http://files.happiermomma.com/uploads/1/3/0/7/130739883/lanaj_nufav_kisenawimuwel_wamutiwejuren.pdfIn PDF document text
    • http://wokidig.risawilliams.com/uploads/1/3/1/4/131438539/ba6a6942d0.pdfIn PDF document text
    • http://files.lindsayvickery.com/uploads/1/3/1/3/131398308/gujixu-mobodevufu-ludemefikixemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/makarebanomorajejunufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/nagemuriluxosaxax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/42705908706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/16530700863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/jugezodotosurojokowuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/vekarujimalemipezobabipum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/slow_cooker_al_pastor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/gobovafewak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/dimimoforim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9544/8997/files/peripigelatabimegelot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/jugejivubajemujodexajerud.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089e0.bin
66efb16ff6de5e35b026b545d51c2ce91676e68679de2c52e353d7a759d67c69
pdf-font-stream PDF embedded font (sfnt) at offset 0x89E0 5540 bytes
font_01_sfnt_off00009c9a.bin
86598118489268fa0349136e1c38d61eda70aed17b5fecbdb7fa4dc95a6dea94
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C9A 11532 bytes