Malicious PDF — malware analysis report

Static analysis result for SHA-256 4354fa2e0dd1a7ed…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 11:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8826c8caef93c4c125e730bd52f5d7e1 SHA-1: 7ae726aa530b9a75c889a63bb6944a4bc6f1a889 SHA-256: 4354fa2e0dd1a7ed2b6f3908fff3d13d12facf3f7b44e0bcf7921527cdaab60a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of these links, https://ttraff.ru/wix?keyword=rachmaninoff+vocalise+op.+34+no.+14+piano, is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or phishing.

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/wix?keyword=rachmaninoff+vocalise+op.+34+no.+14+piano
    • https://static.usrfiles.com/ugd/b8c837_464e5ac5559d42a2a350eb3a5e43b3a4.pdf
    • https://static.usrfiles.com/ugd/5360f8_8a19d14ce94d4c94a0219c0af0821cfa.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8bec08b0a62465bb2743586959c450c.pdf
    • https://static.usrfiles.com/ugd/599f1c_a8e47300a440447696108c4b306ebf87.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_428c8f3d85974e2b962da6884f861482.pdf
    • https://static.usrfiles.com/ugd/576447_8f4c7b34c8db40d2b003dd770e15daca.pdf
    • https://static.usrfiles.com/ugd/83e24f_baf10d64cd70418d96032d8a9d0f4e3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab181c78135d41809a4d3d37dd25602a.pdf
    • https://static.usrfiles.com/ugd/7ff653_d36cd69ea4ed4808b6aedf73a2b1d1b1.pdf
    • https://static.usrfiles.com/ugd/99afdc_dac532097bdb4a8e9dc1be12cc01c9c1.pdf
    • https://static.usrfiles.com/ugd/8b9728_65dafe776d6940479f0cfcd8871a105a.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/jeep_cherokee_2017_maintenance_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6549/files/32573887980.pdf
    • https://cdn.shopify.com/s/files/1/0462/4272/6042/files/figuganumofadadita.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/50872612191.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_off00006692.bin
e28808bd490618865c91227d2767861faa2af96c659cd8207be6ec685cc40758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6692 5560 bytes
font_01_sfnt_off0000797e.bin
c287275bea32349e0e95341993c13e600e717282b6e8337227320612f49ba4e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x797E 10572 bytes

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