Malicious PDF — malware analysis report

Static analysis result for SHA-256 563c6f5fd538dce1…

MALICIOUS

PDF

45.2 KB Created: 2020-08-22 15:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d753f58aeb6767e7112a61ed4ea6836 SHA-1: c670186938ed2d02c6c2b16091064c3ef7001ade SHA-256: 563c6f5fd538dce17b4a1090dc4345e81cf7f8b1a01ac8844c0820f15dbdc8e4
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of an SEO link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bole+chudiyan+audio+song+free++3gp'. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bole+chudiyan+audio+song+free++3gp
    • http://files.ashuler.com/uploads/1/3/1/3/131381881/golovug.pdf
    • http://files.amystreasuresdesign.com/uploads/1/3/1/4/131453823/bofobomoti-xixoximaz-tubigokulepami-womobotebujaxek.pdf
    • http://riziga.lovelocalnashville.com/uploads/1/3/0/9/130969018/3365685.pdf
    • http://files.sethled.com/uploads/1/3/1/4/131454850/1312944.pdf
    • http://jamutim.michiesdogmeatsandtreats.com/uploads/1/3/1/3/131383297/jimor.pdf
    • https://cdn.shopify.com/s/files/1/0433/5966/6341/files/nivofemumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4224/2709/files/97761839633.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/wunedozevofejezagigus.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/zezojep.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/inductive_and_deductive_method_of_research.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/vofopufuwakotetezagepud.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/cylindrical_pillow_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1501/files/82485568353.pdf
    • https://t.co/1Ve7lDBbqMDownload
    • 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_off0000615c.bin
8299389922dceae5a70c193980b9391652ee15c0244ec47999057ac4e4b58e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 5732 bytes
font_01_sfnt_off000074de.bin
dee8b3d97c7f1a7bf3fc5d393d0cf8bfdb830efdaa3b53ec699b8d60fb47f4e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DE 11560 bytes
font_02_sfnt_off00009a4d.bin
752febaa98e1404ff9074513e7f3982ee4eb7ba49f4f79474c717c542a135706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4D 3580 bytes

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