Malicious PDF — malware analysis report

Static analysis result for SHA-256 f200c278363bf76c…

MALICIOUS

PDF

45.4 KB Created: 2020-08-05 02:44:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d393a6b682aa89c8ed6addcad2ccbad SHA-1: a8dbe9c691143798ce652bbb30cfab7367c8ae21 SHA-256: f200c278363bf76c274af2f5268d9eef158a519d7e9af8d3bd2f1858fe032ebf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=circulatory+system+of+amphioxus+pdf', is identified as a malicious redirector. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=circulatory+system+of+amphioxus+pdf
    • http://files.murrysvilledemocrats.org/uploads/1/3/1/3/131380841/vuvaresuk.pdf
    • http://files.bobkloos.com/uploads/1/3/2/6/132695301/1093e664.pdf
    • http://files.justallgoodthings.com/uploads/1/3/1/4/131483019/ketuxugu.pdf
    • http://files.fireadysg.com/uploads/1/3/0/7/130738876/1572963.pdf
    • http://files.training4onelifellc.com/uploads/1/3/0/7/130739043/gikubakesir-bovemekabadaxi-xokilenobewun-juson.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/temijedexek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdf
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/gidupew.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/42435229530.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/853682724.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/poxaziwadujijun.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/tupabujelanudefemoxelu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/vifene.pdf
    • https://cdn.shopify.com/s/files/1/0431/6777/6919/files/wuravewuwukerifude.pdf
    • https://cdn.shopify.com/s/files/1/0434/0334/6078/files/496412681.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/0963/8553/files/kabaxuwedevobu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/70573970894.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_off0000741d.bin
c3cc00c7dc482b6aed5139f6758180a9064b86b12cf32d888a73b3dba5672d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 5468 bytes
font_01_sfnt_off00008693.bin
2ed5be0df1136e63d4dec6c57c5f434077cdd4a8112d89f804f76de43dbf7f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8693 9948 bytes

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