Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc8fe82c08d190b…

MALICIOUS

PDF

43.4 KB Created: 2020-08-12 02:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80c0e20a4a715fc151f16ea3a3013b87 SHA-1: 8d38baebdebfc61a1c61b1a04cc79733f945ff17 SHA-256: ddc8fe82c08d190b41b8a64ad3e4cec215997e8699211da9caba51816aef2cc4
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a Sigma Aldrich chemicals price list, with the primary malicious link pointing to a redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the link at https://ttraff.ru/pify?keyword=sigma+aldrich+chemicals+price+list+2020+18+pdf is part of known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are benign Shopify URLs, likely intended to improve search engine ranking for the malicious link.

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=sigma+aldrich+chemicals+price+list+2020+18+pdf
    • http://files.westaflearningcenter.com/uploads/1/3/1/6/131607374/zixedogipavepum-nasunuto-jonor-besutoxekokafeb.pdf
    • http://files.beachhousedestin.net/uploads/1/3/1/4/131437648/0a59cfc.pdf
    • http://bomowaxi.enlightensatori.com/uploads/1/3/1/8/131857631/242fad9.pdf
    • http://vazogog.delislechiropractic.com/uploads/1/3/0/8/130814328/xipogoxulisobeg_zajofawupoki_bawuralono_valexidos.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/vikuzukevidojinuxajevunoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0756/5209/files/67198429216.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/consonant_sounds_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/22630070779.pdf
    • https://cdn.shopify.com/s/files/1/0440/8590/3525/files/synonym_for_patriot.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4981/files/jeligiwigutojatafodisora.pdf
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/python_write_list_to_csv.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/nyse_holidays_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/foremupubabixufagevagexur.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/12461847415.pdf
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/15473715677.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/uses_of_aldehydes_and_ketones.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/62839886251.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_off00006704.bin
d30947bfd693142ba85b7ad602f47d14a3e5ac4bf8948869bc1fb7b893be3936
pdf-font-stream PDF embedded font (sfnt) at offset 0x6704 6192 bytes
font_01_sfnt_off00007bf1.bin
09c2702be7130b149d0aa291ad2578ae68a9fc770764ca3c262f7aea52834ab3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF1 10800 bytes