Malicious PDF — malware analysis report

Static analysis result for SHA-256 be45e7e118234d07…

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 09:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66ffe320f35fa5666abfc216eb881da7 SHA-1: d76ae8329649e959638fc01ecb479915ffa3283b SHA-256: be45e7e118234d0783d00492e4a76c8d008909e01bd840b60f749e475563e2f0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF files. One of these links, 'https://ttraff.cc/wix?keyword=exercicis+categories+gramaticals+2+e', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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.cc/wix?keyword=exercicis+categories+gramaticals+2+e
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/solivarusebabitalemim.pdf
    • https://cdn.shopify.com/s/files/1/0435/7763/9071/files/cutting_edge_intermediate_workbook_with_key.pdf
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/koxegifudesivuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/kisolajowarumewig.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/gepinedom.pdf
    • https://static.usrfiles.com/ugd/ce14f3_cbe928cb71b943c19256717e76156b05.pdf
    • https://static.usrfiles.com/ugd/10a4aa_87b0711359364254b856bd95d711e35c.pdf
    • https://static.usrfiles.com/ugd/6cf392_3b1030c26c61415c914903c378b0b901.pdf
    • https://static.usrfiles.com/ugd/8b97dd_6e37e77c96b146948de11100fba0d355.pdf
    • https://static.usrfiles.com/ugd/b88e3d_007c22bea8004c5993ac797f4aedea34.pdf
    • https://static.usrfiles.com/ugd/96768c_3ae01cf31d514c79855f0b30d01ff78e.pdf
    • https://static.usrfiles.com/ugd/dd6616_abea81285d3a47bb96c1a977ac2fc33e.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_off0000698c.bin
427977b7416335eae78751aa7715d616cded7eb65357750ab28da0a499262fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698C 5276 bytes
font_01_sfnt_off00007b6a.bin
5a648d14a6e5cf0cabb2a6f0332d1d61e55ec9b1c685c2c81902d46b0f486c5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6A 15056 bytes

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