Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd8e35dc609f2fd8…

MALICIOUS

PDF

88.9 KB Created: 2020-09-01 11:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64407490832329f343268b1a57e46e81 SHA-1: 5799ecefb536b36fa1753fce9ab8e6b02bdc3577 SHA-256: fd8e35dc609f2fd83b95634ea801234782725a19aa7b77dc707e77017a3aa416
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/wix?keyword=beechcraft+bonanza+v35b+manual`. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, likely for SEO manipulation or to obscure the malicious destination.

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=beechcraft+bonanza+v35b+manual
    • https://static.usrfiles.com/ugd/4f270c_2f5ccda960954ecc8744e2acdcf37934.pdf
    • https://static.usrfiles.com/ugd/b8c837_1272f4950e444fbfa716bbce6ea31bf6.pdf
    • https://static.usrfiles.com/ugd/4f270c_2032b2c687a14cdf8fcaa3308bf0b7d0.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/botany_practical_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/cisco_sg350-_10_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0445/6369/3732/files/barycentre_terminale.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/manageengine_servicedesk_plus_admin_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3247/6838/files/adding_subtracting_multiplying_polynomials_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0454/2693/3916/files/adobe_sketch_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/nabakifajepuvavaxavafin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/90848509885.pdf
    • https://cdn.shopify.com/s/files/1/0428/2623/6063/files/60525863597.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/63777604479.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_off00011e78.bin
37dc9e1202c1f808cc1ff5997815e88cc7fe1ce704c9bd7dc30b744891a6de22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E78 5532 bytes
font_01_sfnt_off00013136.bin
9d704f7e9275a7b9a88c67ba648430441a323a99bf3926c96e4bc6ee5b17d94d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13136 11084 bytes

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