Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a90ba49122a5f34…

MALICIOUS

PDF

60.7 KB Created: 2020-08-31 03:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93fc57abd8fe5f5a66bbc006cbe26acc SHA-1: c73640043552c54b63b19c7950812afa322921ec SHA-256: 4a90ba49122a5f3445badaecdcc69925de3303c68d96c9e3b383e5b889e6473d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=bloom%2527+s+revised+taxonomy+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and click-through rates to the malicious URL.

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=bloom%2527+s+revised+taxonomy+pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/xanimekololipokuvasob.pdf
    • https://cdn.shopify.com/s/files/1/0434/0678/6725/files/gofiboviposabogiraropiti.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/medio_hipotonico.pdf
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/56633742362.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/xalemuzafog.pdf
    • https://static.usrfiles.com/ugd/3b47cb_f62f6b55995f480899b8b7422f7e7541.pdf
    • https://static.usrfiles.com/ugd/2c608b_a7906d02d27247448fcad58430182dbd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/transistorized_ignition_system.pdf
    • https://cdn.shopify.com/s/files/1/0447/7042/7031/files/61090422583.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/rezinuvumaxovar.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/58395776330.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/bernie_mac_show_full_episodes_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/9072266888.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_off0000a644.bin
113aeb702eb5e576f47f00d698b1166c74621fa8702a6048d53d46721ee67a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA644 5500 bytes
font_01_sfnt_off0000b8fc.bin
93fbfb8844727bb6b647febbfa1c48ac6259e68146f7acb74201b097b0cf01d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB8FC 14408 bytes

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