Malicious PDF — malware analysis report

Static analysis result for SHA-256 40dbe5e57ca5d66b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 10:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45c6243b093a4a060de2992d7324ecd4 SHA-1: 6fd3b81d73bf941c4673907d37da5db98c17db4b SHA-256: 40dbe5e57ca5d66bc10b40cebcc4d6d89529e67e3680b522235ece514a245789
120 Risk Score

Malware Insights

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

The PDF document contains a deceptive title 'Dog due date calculator' and embeds a large number of links, including one to a known malicious redirector at 'ttraff.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a mass of external PDF links, likely intended to obscure the malicious redirector or for SEO manipulation. The document body, though partially corrupted, contains the lure text and 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.com/wix?keyword=dog+due+date+calculator
    • https://static.u
    • https://static.usrfiles.com/ugd/dd4472_5821bdfc33024b7ea69ea1ae621aef5a.pdf
    • https://static.usrfiles.com/ugd/a01749_c5963e2bbaf548c297c82ff64903c46d.pdf
    • https://static.usrfiles.com/ugd/3fc21f_003ef090fd7b4e74a1eada3591959c3c.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/animals_maroon_5_song_mp4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9a69bcc4ee8492594ddbdeac6519153.pdf
    • https://static.usrfiles.com/ugd/b8c837_22a277fea62c494f8fa2f190366ff8c7.pdf
    • https://static.usrfiles.com/ugd/d1d005_46b1b78f94fb470887ae92530876d449.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e34c66d08774e7887b22592ed906c54.pdf
    • https://static.usrfiles.com/ugd/d1c05f_15577ce2725e43b3b0375c186ce5c9b1.pdf
    • https://static.usrfiles.com/ugd/b7306e_616ec4fdda1641cca54f93f424773e9f.pdf
    • https://static.usrfiles.com/ugd/bae363_bb57450f1cf64bcfbe954835e0a378cf.pdf
    • https://static.usrfiles.com/ugd/516793_086cce742d4844bebd14497ae433dcc8.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_off00006645.bin
3defca36f88b46c9bcf5488957a8569dc33fb52f34daf24342fc468ef90f1ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6645 4928 bytes
font_01_sfnt_off0000771a.bin
aefa0d78681ad68bb2f01e1a287572b4b7c8e6c091ef8b6dfe906adc0d34e286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x771A 10448 bytes

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