Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6bba1e83bb35477…

MALICIOUS

PDF

49.9 KB Created: 2020-08-30 02:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04700709eea1e5a484f9cc2ad43051df SHA-1: 4d26277c24d7116e16c76f9cd5fc61f8afc24fa4 SHA-256: c6bba1e83bb35477dc3821994c2d56c72d60fe831b8c1a95c0b0dfeecc8cab0b
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO manipulation. A critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.cc/wix?keyword=nurse+patient+relationship+definitio. This suggests the document is designed to redirect users to malicious sites, potentially for phishing or malware distribution.

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.cc/wix?keyword=nurse+patient+relationship+definitio
    • https://cdn.shopify.com/s/files/1/0440/8157/8136/files/duvubaginasa.pdf
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/20656993871.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/change_color_jquery.pdf
    • https://cdn.shopify.com/s/files/1/0432/6070/6971/files/jerabukoduwapo.pdf
    • https://cdn.shopify.com/s/files/1/0463/6816/1953/files/55011798739.pdf
    • https://cdn.shopify.com/s/files/1/0429/0582/9532/files/38309171450.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3455/files/xoradisojibuwezezil.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/sapaxewar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41758367329.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/t_shirt_template_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3214/9148/files/33569680870.pdf
    • https://cdn.shopify.com/s/files/1/0462/4246/3898/files/xml_file_to_java.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000790a.bin
04566b6a46159c89fa1353630e3b9c9f721098af7606195c81a725362595d954		 pdf-font-stream PDF embedded font (sfnt) at offset 0x790A 4980 bytes
font_01_sfnt_off000089e7.bin
cd91a46b6668567acc5cc5b782e2a99a4835443eb47050b3418de4e86450f72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E7 10060 bytes
font_02_sfnt_off0000ac52.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC52 4324 bytes

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