Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95d47c0f637b12f…

MALICIOUS

PDF

48.2 KB Created: 2020-08-30 15:02:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f043423d1c886c87b38ba75667507fa SHA-1: 81ab31f13058608df356a01b0b723c83dd1c5798 SHA-256: c95d47c0f637b12f6ecdb1436ba499a9ee60e3586345d721c0ac5b08d49545c2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm attack pattern designed to obfuscate the true destination. The primary malicious URL identified is ttraff.cc, which is flagged as a malicious redirector.

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/wix?keyword=spongebob+musclebob+buffpants
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/59433216312.pdf
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/common_medical_abbreviations_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/40030206776.pdf
    • https://static.usrfiles.com/ugd/80bfa9_f676de55464d4eb5bce48f5e3466c064.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_74e1716428204517890b96761d653b1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9a9fea88f0240649fe5c4050693dea6.pdf
    • https://cdn.shopify.com/s/files/1/0431/6197/6994/files/amonio_elevado_en_sangre.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/pekosibagejes.pdf
    • https://cdn.shopify.com/s/files/1/0438/3028/0352/files/ctet_syllabus_2020_paper_2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b90efcf3d364fdf8a2a72e895831b98.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_c60f68c89147435db6964cab5e8a9da8.pdf
    • https://static.usrfiles.com/ugd/b8c837_60e58ff5224a480da5784657af1b4e42.pdf
    • https://static.usrfiles.com/ugd/b8c837_6095cd605a4b43bca7bb6f59728d8c0f.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_off0000693b.bin
289a4152780d6816c2b8d6de9ac8236fcfcfaa1639425c1383cf6ea47eab7243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693B 5480 bytes
font_01_sfnt_off00007bcc.bin
be58e7e35f6a292c7ab4800643754422ac3e38d35ee5fa530c0cf9b1c65e157c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 10268 bytes
font_02_sfnt_off00009f1f.bin
569f756873fd89e9ac54c2be6ee8ad0a68594ee77c2378937be7521d336ae4b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1F 16064 bytes

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