Malicious PDF — malware analysis report

Static analysis result for SHA-256 960cd6f81298f667…

MALICIOUS

PDF

58.0 KB Created: 2020-08-29 05:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bee10b3848fd499a7de8b3e8a1ba2d84 SHA-1: 2eacda1107a42bb96ce32f21b9013952925cf1ac SHA-256: 960cd6f81298f6679b416d5e3df387ed2b0c49119c09df2f8ee9194a1276d28c
150 Risk Score

Malware Insights

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

This PDF file exhibits malicious characteristics, primarily through its inclusion of a link farm. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of the embedded links, specifically 'https://ttraff.ru/wix?keyword=myth+war+2+leveling+guide', points to known malicious redirector infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic reveals a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this file.

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/wix?keyword=myth+war+2+leveling+guide
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/63675927080.pdf
    • https://cdn.shopify.com/s/files/1/0431/5470/2496/files/poxotogijet.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/antibiotic_resistance_articles_2017.pdf
    • https://static.usrfiles.com/ugd/b8c837_b60e867d04ef4ba2a0132c422b7b7d6b.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/sururisaxokan.pdf
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/44132010771.pdf
    • https://cdn.shopify.com/s/files/1/0436/4828/6880/files/zinitojogokagim.pdf
    • https://cdn.shopify.com/s/files/1/0434/6147/6509/files/similarities_between_meiosis_and_mitosis.pdf
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/1412883103.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/botejonowebi.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_off000090ef.bin
2e935b79e10f78d297a4df7b78ef6f42e2e19b468afdeac8eb5b9c8bd3546146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90EF 5300 bytes
font_01_sfnt_off0000a30e.bin
5f39ed0fc6fbd71e785cc6501ebdbabb1143df2d9a0eed54c95646513c0d2c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA30E 10344 bytes
font_02_sfnt_off0000c69a.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC69A 16092 bytes

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