Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9eea77b2bb0032…

MALICIOUS

PDF

44.2 KB Created: 2020-08-19 21:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51cd3d424c03e8519822c36cabfda4c3 SHA-1: 0af7bcba2daa9eb67ab677e9b4c4bcb0e91bee49 SHA-256: 2a9eea77b2bb003231867fe3c3c2fb22fdd82051bc55b946936c1c1bdfae4ee0
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the string 'Template for personal finances' and the malicious URL itself, suggesting a social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates the presence of multiple external links, further supporting the malicious intent of redirecting users to potentially harmful content.

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=template+for+personal+finances
    • http://files.niceskateboard.com/uploads/1/3/1/0/131070581/9919938.pdf
    • http://files.lakesidechorus.org/uploads/1/3/0/7/130740191/7344ddac2edce.pdf
    • http://files.powerofplaywilmington.com/uploads/1/3/2/6/132683142/satoweso.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/57283308584.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/30277840358.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/14400864576.pdf
    • https://cdn.shopify.com/s/files/1/0437/7129/7943/files/wikewu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4006/files/bias_fx_keygen.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/biology_class_11_chapter_2_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/novorilexenuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/1093/1358/files/30566940662.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/kinuzadesidobolinanofo.pdf
    • https://cdn.shopify.com/s/files/1/0439/9041/7566/files/feperijad.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_off00007141.bin
27a6c4a0b7cab2d4beb54d9aba353e780c314eb11c5714cac458d2641727c086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 5112 bytes
font_01_sfnt_off0000828b.bin
526a3be09420231903f60039a1fdf224fb0f8f1c369b5266c93563ddbab8a21f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 9868 bytes

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