Malicious PDF — malware analysis report

Static analysis result for SHA-256 232ca0d7c6f951d6…

MALICIOUS

PDF

44.8 KB Created: 2020-08-30 09:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 587fea54bfb637f9ae052e8065ea61a2 SHA-1: 3303f057e9c7cfc5e6c6dc73ebb1819dce91142f SHA-256: 232ca0d7c6f951d6ea771de93678de6b8be7450baa09a082e61bf632586da0fd
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, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/wix?keyword=the+cross+and+the+flag', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary lure. The presence of numerous other links, including to Shopify, indicates a broad distribution attempt.

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=the+cross+and+the+flag
    • https://cdn.shopify.com/s/files/1/0434/2117/1873/files/bimobafipujurefokilalawit.pdf
    • https://cdn.shopify.com/s/files/1/0441/1083/9960/files/soda_price.pdf
    • https://cdn.shopify.com/s/files/1/0434/9709/5333/files/casilda_rodrigaez_bustos.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/65366566592.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/math_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0431/8678/2371/files/jufogagoxapadolalinime.pdf
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/peter_pan_la_gran_aventura_pelicula_completa_en_espaol_latino.pdf
    • https://static.usrfiles.com/ugd/ae059d_b8667e9b2dc74e8191d6f2a3b637a674.pdf
    • https://static.usrfiles.com/ugd/a4e402_931ccd3bbaf24e4bb0cf669ddfbe56e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fab0fb2f8284ee8a177317f2dddbf43.pdf
    • https://static.usrfiles.com/ugd/f4de5e_d08267063a0541d8bfc3c10c39209804.pdf
    • https://static.usrfiles.com/ugd/b8c837_8614395f95f14a9492019aaa4f76754e.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/
    • https://cdn.shopify.com/s/files/1/0441/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070b5.bin
17ffa09c4e507bebc82f37fc03522cfb39cf20c370f334c7aeb83dde7835d513		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B5 5232 bytes
font_01_sfnt_off00008270.bin
842d12d5a107b8cf16d136b208ddee292db6c7ef352adaff69aa1e971039d904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8270 10500 bytes

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