Malicious PDF — malware analysis report

Static analysis result for SHA-256 2982ca3e7461903f…

MALICIOUS

PDF

36.6 KB Created: 2020-08-21 03:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af84fa1a80a1e2d18cc62008a404d38f SHA-1: cb6e4915d75ca13fb42f09adaa24f1c1aeb6f6fe SHA-256: 2982ca3e7461903fb9cd29ddf791d4018949e660a9ea399eda2749afc70a174f
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.ru, which is likely part of a phishing or malware distribution campaign. The document body and embedded links suggest a lure related to "Us history regents answers june 2018" to entice users to click the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to potentially improve search engine ranking for malicious content or to obscure the final destination.

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=us+history+regents+answers+june+2018
    • http://boruzuriz.hockeyatlas.net/uploads/1/3/1/4/131483281/4549984.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/banev.pdf
    • https://cdn.shopify.com/s/files/1/0436/1699/3440/files/46844066129.pdf
    • https://cdn.shopify.com/s/files/1/0432/6182/1092/files/sinijefofivolakuj.pdf
    • https://cdn.shopify.com/s/files/1/0459/6229/7504/files/39860911717.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/gezapomi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5044/8549/files/advanced_medical_bacteriology.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/29494716000.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/delegation_of_financial_powers_rules_dfpr_1978.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/kelanilekijazogesabor.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_off00004ff2.bin
8cb74f6cb56d83dc12b312ddb8c82003b8dff993af4941efdfbddc105b4e4ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF2 5696 bytes
font_01_sfnt_off00006371.bin
7c5644196a7e9260129548f24d33928e4bec0347c1e4031596e9b17abb17fa84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 10084 bytes

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