Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee95be28f5cbee8…

MALICIOUS

PDF

44.0 KB Created: 2020-07-31 16:55:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c34cd25274f5504000a96516dfc3bb5 SHA-1: 6c0786e8e4e8934665164cee8350e38fea859ea9 SHA-256: 2ee95be28f5cbee8ed9a989aa47876f6f50d7a0fd90552fb2b527b7d57fc7085
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=mhw+threat+level'. While many other links point to benign Shopify-hosted PDFs, the presence of the malicious redirector and the sheer volume of links suggest an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly innocuous documents.

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.ru/pify?keyword=mhw+threat+level
    • http://files.columbiariverchapterdar.org/uploads/1/3/1/8/131856052/6236578.pdf
    • http://files.juliesoliloquy.com/uploads/1/3/1/3/131398489/suzobidi-senejomafavu-xuvugal-kekijonagejapa.pdf
    • http://files.coweta-fayettemta.com/uploads/1/3/2/7/132711954/9caaaa7c30a.pdf
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/baxipapitube.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/desetomalabaxow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxasukazojolivuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/vadojipefomejuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1348/0343/files/50642901117.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/64020835982.pdf
    • https://cdn.shopify.com/s/files/1/0429/4210/3719/files/76281250288.pdf
    • https://cdn.shopify.com/s/files/1/0433/5956/8037/files/gexarelegukabef.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_off00006509.bin
d56f1da16049d07bc6c720049681359bf8dc6857e88e1c084191fd4b64e01bce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 4752 bytes
font_01_sfnt_off00007541.bin
f70546bf3e95229180bd92cc8982c06103af6741bda8d43d975b1509787c9376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7541 2720 bytes
font_02_sfnt_off000080d4.bin
1a12c280b70c5f5fd2b78ae0f41aea043bfbc18ead53bad2ed7a7399466aa971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80D4 10100 bytes

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