Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeee570232c58e5c…

MALICIOUS

PDF

42.1 KB Created: 2020-08-09 00:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fb4e16070cb97741a47715333f528b9 SHA-1: 07cbd417233abd4464b93e377f3137c88eba94a2 SHA-256: aeee570232c58e5ce02553418f535321490d6150a6ab9ede08fa9e4f885e6d08
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=development+administration+definition+pdf', suggesting a lure to a malicious site. The presence of numerous shopify.com links indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination.

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.cc/pify?keyword=development+administration+definition+pdf
    • http://files.trendythreadsboutique.shop/uploads/1/3/1/8/131856158/ee78fc.pdf
    • http://files.studiojml.com/uploads/1/3/1/4/131453818/libezikadokimokovuri.pdf
    • http://files.henleynaturalburials.co.uk/uploads/1/3/1/6/131636775/teval.pdf
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/xivekizolifuralimisavit.pdf
    • https://cdn.shopify.com/s/files/1/0430/6380/4058/files/76939358478.pdf
    • https://cdn.shopify.com/s/files/1/0440/7309/1222/files/16944783764.pdf
    • https://cdn.shopify.com/s/files/1/0432/8819/9328/files/pdf_acrobat_reader_free_download_software.pdf
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/negative_exponents_worksheets_grade_8.pdf
    • https://cdn.shopify.com/s/files/1/0439/2802/7304/files/wazujalafatade.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/14601990304.pdf
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/42454448800.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/12405562088.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56773010908.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/xizuko.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3398/files/44940272835.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/wopekitip.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_off0000690f.bin
9d73200015706ebf8f52cea1ca4f8f67e3c0ae5b557f4c32389f5a1c80d1fbe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x690F 5244 bytes
font_01_sfnt_off00007ad2.bin
42e78aec79f367feeef895f689373333bff67f32cad2916e15df4f25dacac74d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD2 9568 bytes

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