Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85dac77e334b946…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 22:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e64a305b54af65fd41cab6c6ffa5496 SHA-1: 2c30b351cd8dd6644ebaf1b2a970877b5a9a015c SHA-256: a85dac77e334b94698011396da8db43407d3d799b2eb76701ff6a4163ba8a24d
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a search result for 'insert excel sheet into word 2016'. This link points to 'https://ttraff.cc/pify?keyword=insert+excel+sheet+into+word+2016', which likely leads to a malicious site. The document also contains a large number of embedded links to Shopify domains, many of which are likely part of a link farm to improve SEO 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.cc/pify?keyword=insert+excel+sheet+into+word+2016
    • http://files.colinlamb.com/uploads/1/3/1/8/131856664/acf41e7dc3fa5.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/proposal_penelitian_tentang_bahaya_merokok.pdf
    • https://cdn.shopify.com/s/files/1/0437/5825/6286/files/36652103051.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/14619808758.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/44318039071.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/pavagusarugepuzavezuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/1108/7259/files/clash_of_clans_apk_indir_son_srm.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/neurobiology_of_mental_disorders.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/84593405198.pdf
    • https://cdn.shopify.com/s/files/1/0433/6523/6886/files/electrical_engineering_materials_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/torrent_websites_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9957/files/git_change_origin_uri.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005773.bin
163c278e0871cf72bc1bfd56fd23373897e86fd36ba21b648ea52ae10e8b3aa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5773 5184 bytes
font_01_sfnt_off00006916.bin
60a153e830eca7c58e2208dde5ad85f8d5e0ad214b2f49a5c86ad197418b1380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 10200 bytes
font_02_sfnt_off00008bbe.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBE 4324 bytes

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