Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2838e012ff705e…

MALICIOUS

PDF

47.5 KB Created: 2020-07-29 02:24:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 700e25bb74bd754527d01fa62644b041 SHA-1: 83d0a3b45c30d64b3ae9a6bcd19fe75cfc8d5ee5 SHA-256: 1a2838e012ff705e8b462e8dda9fd699ac40f4bf68b1d6059fe6fc14099361f8
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector hosted on 'ttraff.ru', which is flagged as malicious. This redirector is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains text related to a 'student loan abroad form', suggesting a social engineering lure. The presence of numerous links, many pointing to Shopify domains, indicates a link farm strategy, likely for SEO poisoning or distributing the initial lure.

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=student+loan+abroad+form
    • http://files.eaglehavenwinery.com/uploads/1/3/1/3/131379111/9097538.pdf
    • http://files.calliecolifecoaching.com/uploads/1/3/1/4/131438366/f0ac8d3813.pdf
    • http://files.smithelectrolab.com/uploads/1/3/1/8/131857476/rudobawakanub.pdf
    • http://files.artinuum.com/uploads/1/3/1/0/131070062/3550537.pdf
    • http://files.christyokeeffe.com/uploads/1/3/2/7/132740350/3039d2ae127.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0438/6196/7013/files/11552271753.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/21429598632.pdf
    • https://cdn.shopify.com/s/files/1/0434/4594/4481/files/rorovonejebigemubekew.pdf
    • https://cdn.shopify.com/s/files/1/0428/7011/2423/files/zetuduwunonujan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gefoviliruvowej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/42688972333.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/88462579263.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/luxojewebaweja.pdf
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/58377099601.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/9889673008.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_off00007c4f.bin
799c1e14b3a85a9a299ea7bd0494f70390def70a2f64b1d3c1a54555f43ed20a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4F 4952 bytes
font_01_sfnt_off00008d00.bin
d6394190e837223af22f7658d1533b0fa99461868c5fb560b2bf5f93baa56a1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D00 10608 bytes

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