Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1827aff7bdbf3e4…

MALICIOUS

PDF

46.7 KB Created: 2020-08-14 09:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 742ecdfee99fb0f47b4f1dcd41757867 SHA-1: db7d54f49b6b8df1405eb2817e19251f5c4d0246 SHA-256: d1827aff7bdbf3e4d20999ff0d6d7236e3375854ad854aa8f6dfb760e01d0bbb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to shopify.com PDFs, likely as a SEO spam or link-building tactic. The primary malicious URL, https://ttraff.com/pify?keyword=likert+scale+data+analysis+example+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the PDF's purpose is to redirect users to malicious infrastructure.

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=likert+scale+data+analysis+example+pdf
    • http://nipiri.tuttlesnursery.com/uploads/1/3/1/1/131164250/5436244.pdf
    • http://files.exchangedragon.org/uploads/1/3/1/4/131438448/7563062.pdf
    • http://misubux.djwindowcleaning.com/uploads/1/3/1/4/131407435/9f90575de574c.pdf
    • http://sabux.northcoasttactical.com/uploads/1/3/1/4/131437709/3a372d2e44ba.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/xifukoda.pdf
    • https://cdn.shopify.com/s/files/1/0437/8096/4509/files/total_azolla_zs_32.pdf
    • https://cdn.shopify.com/s/files/1/0430/5544/8213/files/bepejawefejar.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/31979538271.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/lolikugomilakefak.pdf
    • https://cdn.shopify.com/s/files/1/0436/4078/3008/files/45676544610.pdf
    • https://cdn.shopify.com/s/files/1/0438/6275/3445/files/boponax.pdf
    • https://cdn.shopify.com/s/files/1/0433/3499/2025/files/alexander_pope_eloisa_to_abelard.pdf
    • https://cdn.shopify.com/s/files/1/0448/4923/4081/files/blood_of_a_stranger_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2306/4488/files/18774625900.pdf
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/python_strip_punctuation.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/21699453551.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/building_maintenance_checklist_template.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_off00007850.bin
7fca13656eff6404b437e4b5d7eb880bdcda05745866cf5d7c10a5d999f11500		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7850 5476 bytes
font_01_sfnt_off00008aec.bin
caccfea3dfba81e3938eb1d80e6003f27dfe2b29fcd7f22d3d57176257d5207c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEC 10068 bytes

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