Malicious PDF — malware analysis report

Static analysis result for SHA-256 c40a650468534366…

MALICIOUS

PDF

41.8 KB Created: 2020-08-12 00:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d296ce3517363e5d94bcbc996c5b59f SHA-1: af8206065e0e4986859b35c416f5b2f9737ad6a9 SHA-256: c40a650468534366eab43caf4d588173a2e87d2be8233dce3176868dae9a3263
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify domains, but one critical link directs to a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=reading+street+4th+grade+spelling+words+pdf', which is flagged as a malicious redirector. This suggests the PDF is designed to lure users to malicious infrastructure under the guise of providing educational 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=reading+street+4th+grade+spelling+words+pdf
    • http://kekenefa.mysticplanet.shop/uploads/1/3/2/6/132681464/rukowivar.pdf
    • http://files.mountainlakesclub.org/uploads/1/3/1/1/131164350/gesewiridi_vejajabone_sixemowel.pdf
    • http://xedupeba.pechamps.com/uploads/1/3/0/7/130739024/sajazusagonun_mesamu_fonorewikoxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/zunurerozoduxemubokof.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/66137309271.pdf
    • https://cdn.shopify.com/s/files/1/0440/5523/2677/files/august_month_current_affairs_vision_ias.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/pototave.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mazimuzoxoku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3640/files/nalibafokosofegozekusova.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/deniz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6164/0358/files/90725908518.pdf
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/viwomokawigodanevom.pdf
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/becommerce_market_monitor.pdf
    • https://cdn.shopify.com/s/files/1/0431/3903/9388/files/29313155218.pdf
    • https://cdn.shopify.com/s/files/1/0437/6546/5245/files/belajar_coding_dasar.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d60.bin
d0fa554019b404e183b45cb7bbf467aa60a26e8435f9f4e5fc75e30ebc103974		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D60 5488 bytes
font_01_sfnt_off0000701c.bin
65470c46cb2631321bfd023918bc0d66c198aaa5204d8ed8939f0a72bf712860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701C 13312 bytes

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