Malicious PDF — malware analysis report

Static analysis result for SHA-256 c517327c90129c5c…

MALICIOUS

PDF

42.7 KB Created: 2020-09-08 16:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91558e15e4128b044029afade84f1852 SHA-1: cfe8dd851a95f53c3beb6c49a719c06b74eb920f SHA-256: c517327c90129c5c7eb92ebda9543890b0f0ba4c4db5aa2c336277ba3c1b138a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The primary malicious URL is https://ttraff.me/wix?keyword=domain+driven+design+martin+fowler+pdf, which likely serves as a lure to download further malicious content. The document body itself is heavily obfuscated and contains embedded URLs, reinforcing the malicious intent.

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.me/wix?keyword=domain+driven+design+martin+fowler+pdf
    • https://static.usrfiles.com/ugd/1f6d71_c2151f145100439ebb509ec981e1db3c.pdf
    • https://static.usrfiles.com/ugd/49f5ef_6088a6b36c9d4347afd38dce6d59a10c.pdf
    • https://static.usrfiles.com/ugd/ce14f3_1ecb532d4d92419ea9491323e30e727d.pdf
    • https://static.usrfiles.com/ugd/5b604d_f9b884c4c0c9417fa5cde16f56f4d3bb.pdf
    • https://cdn.shopify.com/s/files/1/0435/0305/9110/files/lurifeluzogunepewujisuto.pdf
    • https://cdn.shopify.com/s/files/1/0438/3529/3856/files/46104744035.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/wikoxorenasita.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_7c18d384609749e8bdfa166448e2e5ae.pdf
    • https://static.usrfiles.com/ugd/d4da64_1add9473c1154e3bae5265ebfa150d7a.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/bexebawogafojezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/jipubavijunuzisuvugerufup.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_off00006837.bin
81772139c1db09a419cdaf2d868215aa752e766a3a3b651dd89c0b08fc7b9ddf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6837 5512 bytes
font_01_sfnt_off00007af8.bin
7d9f6c52d261f82df88707bb7c0ad5b9c12f597273a6187e7fb927367a551ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF8 10380 bytes

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