Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f56304e6310b49…

MALICIOUS

PDF

43.7 KB Created: 2020-09-01 22:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f99f03dadf1c4978eb4018487aed2cf SHA-1: 75d7ab8354fe2f54895785c1d22c699b60aa9f5e SHA-256: 38f56304e6310b49e37708feac1013561815ef76a410d1e2b17c3bea205e1ae0
120 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, identified as a link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=endocarditis+prophylaxis+guidelines+acc', which is flagged as malicious. This suggests the primary purpose of the PDF is to redirect users to malicious sites.

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=endocarditis+prophylaxis+guidelines+acc
    • https://static.usrfiles.com/ugd/865d50_8e88ff936bc1461f88f0eb8459b01e40.pdf
    • https://static.usrfiles.com/ugd/b972d5_a58f88224d8b476c89ebc174e52f1d9d.pdf
    • https://static.usrfiles.com/ugd/b48b60_06d0f7db95c2445ca78a2d42133bc1bb.pdf
    • https://static.usrfiles.com/ugd/6cfc61_f7e5baeb5fd34bb88db028aacba26621.pdf
    • https://static.usrfiles.com/ugd/f1780b_c5eca1f7bc03480aa2750735ae187c9a.pdf
    • https://static.usrfiles.com/ugd/fbcb80_910ef97597fa4962ae8aaa0c5d1c31c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_e6d1a1a281cd4e11a0b0ea853dca1c83.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/zewenakapilewex.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/xisuretomaviwesofegilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/16331014185.pdf
    • https://static.usrfiles.com/ugd/b8c837_85f86a5ea4cd4015b086c822e297a838.pdf
    • https://static.usrfiles.com/ugd/a107db_c2c89791710743048591a8823a1876b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2d4489615cd4dc8bba1a7d44a224d1c.pdf
    • https://static.usrfiles.com/ugd/930050_51b0f9fb8931413c91955b4c403c6db6.pdf
    • https://static.usrfiles.com/ugd/191a6d_0021ea7225ae4dd4ac48ec91fa50b1ab.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_off000068b6.bin
8d680aa8b808c62bc025400b785c20083f4af232002317576ea417210834b106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68B6 5460 bytes
font_01_sfnt_off00007b57.bin
9d27c9c8778ed8ced97f9cc3efaff661fd19377294a91d5ee33eec13a871b87f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B57 11764 bytes

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