Malicious PDF — malware analysis report

Static analysis result for SHA-256 c37a7568bf8eb9c1…

MALICIOUS

PDF

38.3 KB Created: 2020-08-23 03:00:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6da5738ca5aa870006d5629f8ce081c7 SHA-1: eb439e5fd8c24b40d0e654bee7404d600498d99f SHA-256: c37a7568bf8eb9c12f093f06e9beb8bb37af7e95fb8c79d66f469fe1dba7bacb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=arjuna+arjuna+andhi+mazhai+song+free'. This URL is likely used to redirect the user to a malicious site. The document body contains garbled text but also includes the same URL, suggesting it's part of the lure. The PDF also contains a link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0428/0962/2691/files/21740617507.pdf'.

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=arjuna+arjuna+andhi+mazhai+song+free
    • http://files.squareonegoodsco.com/uploads/1/3/2/8/132815154/tasawaz.pdf
    • http://muzimot.dentalelle.com/uploads/1/3/0/8/130814328/85c68336b7.pdf
    • http://files.melodywagnerforstate.com/uploads/1/3/1/4/131453674/widaxerexizufu.pdf
    • http://dojesosow.fredspandh.com/uploads/1/3/0/8/130813330/b73061595866.pdf
    • http://kovugive.hillsboroupc.com/uploads/1/3/0/8/130873738/negoxije-wagoso-rawawol.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/21740617507.pdf
    • https://cdn.shopify.com/s/files/1/0435/6666/1791/files/36855272122.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/zezuxoripeki.pdf
    • https://cdn.shopify.com/s/files/1/0435/3946/4341/files/29234889326.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/ackerman_proffit_classification.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4702/files/human_resource_accounting_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0434/3352/5400/files/kefumususezukafobulip.pdf
    • https://cdn.shopify.com/s/files/1/0448/9219/2923/files/wufetasanep.pdf
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/2201283967.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_off00004cf2.bin
9b24817b299058ebd1e2fafeddc27995fb7878c0178705df9efb98183c3168e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CF2 5404 bytes
font_01_sfnt_off00005f32.bin
ff95a45e17e73a2598958dc1d7199c72915cc3a92ee8dd743b18643890328bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F32 14092 bytes

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