Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97d2a1d6549b62a…

MALICIOUS

PDF

54.0 KB Created: 2020-08-08 20:07:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 765ddfee77f1ba28bafcb6dbe11f064b SHA-1: d6f2daddc0cdc889857afd2a30aad8c8fbb9b69c SHA-256: d97d2a1d6549b62a22973a1d91d9e5d3a1c4b02ffaf7d63c96e6bbb192dca3d1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains, including a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL to the malicious redirector, suggesting the intent is to lure the user to this malicious site. The presence of numerous links, including those to Shopify, indicates a link farm SEO strategy to improve search engine visibility for 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.ru/pify?keyword=working+capital+management+project+synopsis+pdf
    • http://files.twigadesigns.com/uploads/1/3/1/0/131070152/xifefatuliviw-digez-tilolu-kefodozitaxep.pdf
    • http://doxikejo.rogharris.org/uploads/1/3/2/6/132682646/geroxodagoxina.pdf
    • http://files.taoslightandshadow.com/uploads/1/3/1/4/131408017/a0eaee1.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/77174659986.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/96743842999.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/acatech_industrie_4._0.pdf
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/15448421857.pdf
    • https://cdn.shopify.com/s/files/1/0435/0581/1608/files/77534591628.pdf
    • https://cdn.shopify.com/s/files/1/0445/4160/8100/files/akuntansi_sektor_publik_mardiasmo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0945/7825/files/jedevinu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/56934153833.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/understand_your_man_tim_lahaye.pdf
    • https://cdn.shopify.com/s/files/1/0438/4089/7184/files/bireluteboderor.pdf
    • https://cdn.shopify.com/s/files/1/0433/5563/5871/files/lactational_amenorrhea.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_off000094fd.bin
5a32bcb00185a65c0279d68b9cea19b2c4a3084024836a3e28a9d48a16233375		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94FD 5728 bytes
font_01_sfnt_off0000a891.bin
c7cc0700ced34a7910415ef6bda3af58ae00cf0d8a5d948575a026690165eef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA891 9980 bytes

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