Malicious PDF — malware analysis report

Static analysis result for SHA-256 db00610d70616f4a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-02 08:28:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 668feecdebdc49d2647b1e9c4be9ebb0 SHA-1: beeeb4a8f26ced7d8c30afe94e3c1ad160003c23 SHA-256: db00610d70616f4a82d5b32cf49510f62fb88d9eb5b81b1154e1c2566238991a
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, masquerading as search results for a common query. The primary link, 'https://ttraff.ru/pify?keyword=does+gmail+automatically+delete+emails', is identified as a malicious redirector. The document body is heavily obfuscated, but the presence of numerous Shopify-hosted PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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=does+gmail+automatically+delete+emails
    • http://files.reditusministry.org/uploads/1/3/1/1/131163904/naluxevelomexif.pdf
    • http://files.dolphinrealtyhatteras.com/uploads/1/3/1/3/131383743/xofibenomomiva_bexefelumet.pdf
    • http://files.scubadivingperhentian.com/uploads/1/3/2/6/132681062/4306742.pdf
    • http://files.kingdom-institute.org/uploads/1/3/1/3/131383727/buraxikaw_fosovo.pdf
    • http://files.eileenhutson.com/uploads/1/3/1/8/131857562/5872143.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/11992889037.pdf
    • https://cdn.shopify.com/s/files/1/0434/3844/0604/files/danesegimuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/xajunodenuzaxuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/gujuxuzuwipitogagob.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/68280541087.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2785/files/lizoliliv.pdf
    • https://cdn.shopify.com/s/files/1/0436/4910/6073/files/95403712056.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/amazon_writing_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/30244990141.pdf
    • https://cdn.shopify.com/s/files/1/0434/7897/4616/files/mivijusanijuxagoluri.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/14380280374.pdf
    • https://cdn.shopify.com/s/files/1/0427/9821/9420/files/27944591952.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1121/files/leximof.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_off000065f3.bin
61e2deba8521c5735976447fcc973f7c76e15e4e9a0a1c61921782ddf53fbf4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x65F3 5264 bytes
font_01_sfnt_off000077d9.bin
7bc354c596e4439b5f780e652592882723b3218c32b553238c25245c2e4c185f
pdf-font-stream PDF embedded font (sfnt) at offset 0x77D9 10128 bytes