Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c1aba65b106c8a9…

MALICIOUS

PDF

83.8 KB Created: 2020-08-18 23:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0183cdf12f3ead5e23cbf6cf600efba SHA-1: f407ea60766f265dd8cd8a34adf72ab07a8b7806 SHA-256: 8c1aba65b106c8a91bc7b3df1e395bf92a99eb4de8fce0d60f00b64e301c607b
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a search result for VBA-related content. This suggests a social engineering attack aimed at tricking users into visiting a malicious site. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector appears to be the malicious redirector link.

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=vba+copy+range+cells+to+another+sheet
    • http://files.modularis.co.uk/uploads/1/3/2/7/132710683/xirate-bexifag-betolaxefofov-ririkofaxon.pdf
    • http://files.btbrv.com/uploads/1/3/1/1/131164174/kawijodawazajupupak.pdf
    • http://files.onehopecoc.com/uploads/1/3/0/7/130775286/4915716.pdf
    • http://files.itshumannature.org/uploads/1/3/2/7/132712093/8555664.pdf
    • http://files.huegah.com/uploads/1/3/1/3/131381721/577c7.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/satemulufaroxomebasebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/44532259463.pdf
    • https://cdn.shopify.com/s/files/1/0437/0972/6870/files/jebifawoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/68518703663.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/suvijoxatanenuba.pdf
    • https://cdn.shopify.com/s/files/1/0430/9748/9561/files/82416483130.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/pixumumatejiro.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munuzajutajamarigeregutoz.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_off0000f6ca.bin
f33c1979067763a406e8b296e67f2a6451686e4511d171c5569add1237be6c56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CA 5404 bytes
font_01_sfnt_off00010921.bin
d2b86128e401b339d2dc9fb33736e20a059ab93a2ba532220ac1ce37bce81bd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10921 10312 bytes
font_02_sfnt_off00012c69.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C69 16312 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.