Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a503c30ad0fedc1…

MALICIOUS

PDF

50.2 KB Created: 2020-08-31 10:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c08b838330c9893d97dfc07ba6dcf76 SHA-1: 08b66756f8ccc8e5550d823a3ab39effc8fdb5c3 SHA-256: 2a503c30ad0fedc132edfb6dbb6e48b0dfafadb5844f7037ca29dc6bcc6e68da
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This indicates the document is designed to redirect users to a potentially harmful destination. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to external resources, many hosted on Shopify. The document body itself is heavily obfuscated and contains the malicious URL, suggesting a lure to a phishing or malware site.

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/wix?keyword=administration+de+cha%25C3%25AEne+de+fournitu
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76410179135.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/tixusexovixo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/42978676589.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3763/files/cancionero_de_guitarra_en.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/runepizijipugutimapija.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2582/files/what_is_phonology_in_linguistics.pdf
    • https://cdn.shopify.com/s/files/1/0440/6942/1206/files/xaninupinegata.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/farmall_cub_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/43692520786.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/60907796384.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vatajimawi.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_71f64727ed254e21a65d31ffda234678.pdf
    • https://static.usrfiles.com/ugd/74e905_8ccf4d3834e044058e7a573eb67cd7ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_77d5cd66096546239a803f590a49dee6.pdf
    • https://static.usrfiles.com/ugd/b8c837_96d04563b91e43d4904875a785eaa00c.pdf
    • https://static.usrfiles.com/ugd/dd4472_a3a984bdfd7f4cc1b2f73bf0d0c6ce57.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_off0000726a.bin
bb056c3326910b57c1a7051be4d4fba6e10e85972ba4ca42ec4aa00522284db3
pdf-font-stream PDF embedded font (sfnt) at offset 0x726A 5160 bytes
font_01_sfnt_off000083d1.bin
74a6afc3e027d63ec9582d4534460b45e9a1c780bd5932f1907ec9eac435d496
pdf-font-stream PDF embedded font (sfnt) at offset 0x83D1 12688 bytes
font_02_sfnt_off0000ab77.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB77 4324 bytes