Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dfb52f6481423df…

MALICIOUS

PDF

50.2 KB Created: 2020-08-31 13:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 566103c9eabcf3aaea821b1d1e8c035c SHA-1: 5fc5fe3dfcf73f9bfc59e941ae1889dca8e65fd4 SHA-256: 4dfb52f6481423df9ad8c1500bd48b2b3bedb8cbdf5eff5791b21f3afea23ba8
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing indicating it links to known malicious redirector infrastructure via the URL https://ttraff.club/wix?keyword=enthalpie+de+vaporisation+de+l%2527+eau. Additionally, it features a large number of embedded links to other PDF files, identified as a PDF link farm. This suggests a campaign focused on SEO manipulation or redirecting users to malicious sites, rather than delivering a direct payload.

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.club/wix?keyword=enthalpie+de+vaporisation+de+l%2527+eau
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/tenakenisiwoxesiburexobak.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9379/files/soxikal.pdf
    • https://cdn.shopify.com/s/files/1/0467/9906/1141/files/review_and_reinforce_worksheet_answers.pdf
    • https://static.usrfiles.com/ugd/912de2_2bf6e9c6eef84feaa4592ee3ab41fc88.pdf
    • https://static.usrfiles.com/ugd/15ebe2_1af6bb8fbece43d8bc38d832dd4989ef.pdf
    • https://static.usrfiles.com/ugd/08fe48_8dd08ad93c2a4b5f946a206f7485e43a.pdf
    • https://static.usrfiles.com/ugd/ea2f88_206ca1b4ca684ec1a191d863b9002914.pdf
    • https://static.usrfiles.com/ugd/b8c837_c87cc55ad17d49abbae9509732d129a5.pdf
    • https://static.usrfiles.com/ugd/efb3f0_8c38033f9f6447acac0999065fd0f8ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_e26fdb7c845846f9941cd61456e8736b.pdf
    • https://static.usrfiles.com/ugd/b91566_c7bfe79e79474f84b818059fc9328d2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7a5154abc534d9fb684c0cba3385b6e.pdf
    • https://static.usrfiles.com/ugd/3eed2b_dd9f667abe4147cc9ec4e4a6f833bedc.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_off000060bb.bin
6bbcfd261172e9439eb47cf43abc9ffbb4f9b5bea5f628ce0bfa4ed6f39671b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BB 5096 bytes
font_01_sfnt_off0000721a.bin
1ff8f9c9102849202dbab17eb1cf9cef310089f507dbe02358c12331c66b4f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x721A 16764 bytes
font_02_sfnt_off0000a4ce.bin
85d39607b09f2f3655ec9372abd50b6cdc76097802a442e3041a3da3349a64f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CE 16148 bytes

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