Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2dfcd639c3b184…

MALICIOUS

PDF

46.0 KB Created: 2020-08-18 15:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52b6f9f7533ee024773691062a2b7af1 SHA-1: da71069b5676f99637493f9761a1e549686293a4 SHA-256: 8e2dfcd639c3b184689cc44590527fe2fe8848a06f52236baf1d6fef05494fcd
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with the primary link pointing to a known malicious redirector. This indicates a link farm or SEO poisoning attack designed to direct users to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=building+construction+images', which is flagged as a malicious redirector. The presence of numerous Shopify URLs suggests an attempt to blend malicious links with seemingly benign ones.

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=building+construction+images
    • http://files.fiberenvy.net/uploads/1/3/1/6/131606349/5094ac66492a.pdf
    • http://files.oiseaux-tempete.com/uploads/1/3/2/6/132696113/xisokumekoleki.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0605/files/13672260402.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/fikana.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/pijoxeti.pdf
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/94276273699.pdf
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/walmart_mission_statement.pdf
    • https://cdn.shopify.com/s/files/1/0440/3098/4357/files/sisaxabef.pdf
    • https://cdn.shopify.com/s/files/1/0430/8926/4794/files/sixebakaxuteveme.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/44693064684.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3988/files/gudifirememefopebuxave.pdf
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/72684433432.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/25129530466.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_off0000769c.bin
db05f546b051390e359a38e991abd9dd932d5f5bd5663f53ac16d82065d9e151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x769C 5308 bytes
font_01_sfnt_off00008882.bin
f083fc0403a9a2cdc04089591e7b61da20d596f066d7322272dc333ce245b04c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8882 10284 bytes

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