Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66e9a41e4be0a5a…

MALICIOUS

PDF

33.8 KB Created: 2020-08-30 20:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7961f2972d4175f17110c9b8d4348526 SHA-1: 637003693051326d96eee647896f31dd8027cffb SHA-256: c66e9a41e4be0a5a9c6bb277ea09c6bdc9a807aafb415073e28e5241c27446e2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/wix?keyword=dead+doctors+don%2527t+lie+audio'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=dead+doctors+don%2527t+lie+audio
    • https://cdn.shopify.com/s/files/1/0431/9979/1265/files/503217410.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3979/files/nupedidefuxakajowotanari.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/labor_time_guide.pdf
    • https://static.usrfiles.com/ugd/3b47cb_562f206c2ece49449723cfb2ebba0528.pdf
    • https://static.usrfiles.com/ugd/b8c837_9288281e9f6e40dd9760fc43ea6f34b9.pdf
    • https://static.usrfiles.com/ugd/cac9e4_a78787a0ea624eddb785163f17f90e79.pdf
    • https://static.usrfiles.com/ugd/8127dd_929f2179e76b40f4bb651ec53dd9663f.pdf
    • https://static.usrfiles.com/ugd/b8c837_1dca233853b44c6e80c6aa52ceec16bc.pdf
    • https://cdn.shopify.com/s/files/1/0435/0751/5558/files/82947315505.pdf
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/accounting_principles_and_procedures_rics.pdf
    • https://static.usrfiles.com/ugd/4ae4db_05b4a05979ff49edadc6983b2f998e1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_558be57c9b444ec29405b26a0a826d00.pdf
    • https://static.usrfiles.com/ugd/2e16aa_5697f8e7e5f8410f8eb8d839d527963f.pdf
    • https://static.usrfiles.com/ugd/f09a9d_f0adacdd21344b578831115c799c0790.pdf
    • https://static.usrfiles.com/ugd/b8c837_31b9de4785a74f6d8c7e70ad1ce593df.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_off000047e2.bin
ba64472557f6cb991f65a0ac3003d7d70f105166b2e3c3c41cab4b3b71534881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47E2 4964 bytes
font_01_sfnt_off000058d7.bin
f16036357713aae55b9ad2b056d95bfbdfc1105459d01461e2c1ffd2831639b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D7 10068 bytes

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