Malicious PDF — malware analysis report

Static analysis result for SHA-256 deb85debde54cf24…

MALICIOUS

PDF

44.1 KB Created: 2020-08-09 05:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e30232a9697a529c112b1cc03820531 SHA-1: e4f93e096abdf59c09b49aea5458dd0a182d8bd9 SHA-256: deb85debde54cf24088eb306e560a6cdffdbe9d61b55837b00451801df92b5d7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=mutually+exclusive+collectively+exhaustive+mckinsey+pdf, is identified as a known malicious redirector. This suggests the document is part of a link farm designed to redirect users to malicious content, likely for phishing or malware distribution.

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=mutually+exclusive+collectively+exhaustive+mckinsey+pdf
    • http://files.joburgkidspaces.com/uploads/1/3/0/7/130738876/5f0369a5e5f5.pdf
    • http://files.ststephenriverrunners.com/uploads/1/3/1/4/131453062/516356.pdf
    • http://files.jackieschuknecht.com/uploads/1/3/0/8/130874240/3076c37.pdf
    • http://files.vivallbright.com/uploads/1/3/0/7/130776218/mimevurosida-fizigeme.pdf
    • http://bajowolij.kaplanforschoolcommittee.com/uploads/1/3/1/6/131607062/09bdf0e38523c8.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/super_fast_english_speaking_book_free_download_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0339/files/koxemoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/wadutumaweladefizi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/rosegewufixe.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/desuba.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/punep.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/towebodaju.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/81533349024.pdf
    • https://cdn.shopify.com/s/files/1/0432/3780/2146/files/sanefed.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/clinical_anatomy_made_ridiculously_simple_reddit.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_off00006ca7.bin
45d9bcc53c9c4e934d3a23142f8ebea0ab84147ffae82d67106c538cfb2996dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA7 5596 bytes
font_01_sfnt_off00007fb4.bin
293be423cc03240c8b97573bac1de8348bfd02717aeaced983c38dd3cffcd01d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB4 10364 bytes

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