Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d66aa26e32963c…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 02:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3df6fef873be66e67d0d2bfcb1ac7d7e SHA-1: 179d6de5a30920f706978c84d6ae64b1662d0804 SHA-256: 25d66aa26e32963c9d69ae949213a1c270c88a88ebd3d915192e555262a7d8b7
120 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the text 'Hunter fan thermostats' and the malicious URL, suggesting a lure to a phishing or scam page. The PDF structure itself is designed to host a mass of external links, likely for SEO poisoning or to obscure the malicious redirector among many benign-looking 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.com/pify?keyword=hunter+fan+thermostats
    • http://files.randirouge.com/uploads/1/3/1/4/131408537/7877400.pdf
    • http://files.belleminks.com/uploads/1/3/0/7/130775321/tuvela.pdf
    • http://files.pressproofcartons.com/uploads/1/3/2/8/132814465/pelojedanokorirafo.pdf
    • http://files.rachnabisht.com/uploads/1/3/1/6/131636956/jevinede-januwit-debod-wozudolesoxa.pdf
    • http://files.thespiritualcentre.net/uploads/1/3/0/7/130776267/kodixoze_rezuliravij_radesuk_kurinudibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/vubabonidavimidizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0942/5056/files/38971302189.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80023348890.pdf
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/sigenolumo.pdf
    • https://cdn.shopify.com/s/files/1/0440/3891/4213/files/matotuj.pdf
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/43218503450.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/46668871323.pdf
    • https://cdn.shopify.com/s/files/1/0436/1306/1277/files/93697398755.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/rakojixuludodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6670/4550/files/63388872467.pdf
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/23570764028.pdf
    • https://cdn.shopify.com/s/files/1/0438/0160/8353/files/betuxoponubunole.pdf
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/vokusogujeko.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/67592846199.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/nebitiginigipaxik.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/
    • https://cdn.shopify.com/s

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006904.bin
81a1bdadee5d3d6beefe91bcb11ed5c6c52e83ca14cc4686d8da2ae46d596409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6904 4936 bytes
font_01_sfnt_off000079a2.bin
f38024dd9cb4db0b25cdc797ca6e350cc53892191a8482d18e55958560416210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79A2 10028 bytes

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