Malicious PDF — malware analysis report

Static analysis result for SHA-256 439816fd109d036f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 18:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75fc5ecb20747687141bf6a5f9757152 SHA-1: 38e32e7264a77a21c04383dd7fbe8351071850d6 SHA-256: 439816fd109d036f27a4d8c0db0c4e605821ff024e5a72f0dc61639316bbe6b2
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically disguised as a golf watch manual. The primary malicious URL identified is ttraff.ru, which is used as a redirector. The document body, though heavily obfuscated, contains references to the golf watch manual and the redirector URL, reinforcing the lure. The presence of numerous embedded links to external PDFs, many hosted on Shopify, suggests a link farm tactic to obscure the final malicious destination.

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=bushnell+neo+golf+watch+manual
    • http://sadaxido.winegrunt.com/uploads/1/3/2/7/132712358/4a62d20ade015e1.pdf
    • http://kezenemif.pilgrimcamp.net/uploads/1/3/1/4/131438860/1e3016a60e85cd.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6812/files/bikadumijojuwebotagovag.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0417/files/97772383883.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/apostila_tecnologia_da_informao.pdf
    • https://cdn.shopify.com/s/files/1/0437/0015/8632/files/dobekojifebulef.pdf
    • https://cdn.shopify.com/s/files/1/0450/7241/6931/files/juxemoxasawotikaweli.pdf
    • https://cdn.shopify.com/s/files/1/0434/4099/6518/files/report_bug_microsoft_excel.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/77587992752.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/triangle_symbol_text.pdf
    • https://cdn.shopify.com/s/files/1/0445/7424/5023/files/89011079326.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/1754038017.pdf
    • https://cdn.shopify.com/s/files/1/0433/2768/4760/files/67721608229.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/8152297183.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_off00006147.bin
2dd9fb897abd2a650e845f3bc29dbc47d6bb1c382a97ba418c6de77f7f6f26d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 5340 bytes
font_01_sfnt_off00007365.bin
ad83ce32ca181e022e10c0a5b07325a11a11c036c8d54fab83d9615908c9c4ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7365 10408 bytes

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