Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f111a70e0a4eb0…

MALICIOUS

PDF

46.0 KB Created: 2020-08-14 22:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c04fd673c511e1849e27315cccb9bdf SHA-1: c4a3273134bfba8c769f697d3fde8405a083c6ec SHA-256: d0f111a70e0a4eb0a52532446b319de750408088f3c2eb158395293fb901aa0d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cardi+b+bruno+mars+grammy+performance, which is likely used to redirect users to malicious content. The document body contains garbled text along with some of the URLs, suggesting an attempt to obscure the malicious nature of the content.

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/pify?keyword=cardi+b+bruno+mars+grammy+performance
    • http://files.powermoneywomen.com/uploads/1/3/1/6/131637385/a33e742827a03.pdf
    • http://files.ohmsinkspot.com/uploads/1/3/0/8/130814717/9292095.pdf
    • http://liwubar.elainedodgecopy.com/uploads/1/3/1/4/131452883/b3cb38bcc25694b.pdf
    • http://wewekev.lafayetteorchestra.org/uploads/1/3/2/6/132695569/muxekewekijox.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/48425994318.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/kesemen.pdf
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/fodonaxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/mangala_sutta.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3155/files/anita_moorjani_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/6120/5399/files/d_e1_bb_8ach.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/safiwo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/57543675348.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/30102121452.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/zafubefovi.pdf
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/riesgo_cardiovascular_global.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/liguterirolasizeti.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_off0000722e.bin
19da0dfb11b15975369a445c84144e574924be36b78b47d394047b72202a1bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 5592 bytes
font_01_sfnt_off0000851d.bin
8715681507e80446b51536c90365b293007734d07da1198b238c2c6a34601f25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x851D 11096 bytes

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