Malicious PDF — malware analysis report

Static analysis result for SHA-256 c580853c01a01735…

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 02:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 738f290f9a9c7884f325b8b26db580c9 SHA-1: 7246494fafa17a3a2deec230d7a7a27592926f0c SHA-256: c580853c01a017359f394a375c02786434816a8663cae3fb5bc0c2448b43c2a2
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, as indicated by the PDF_SEO_LINK_FARM heuristic. One of these links, 'https://ttraff.com/wix?keyword=free+contemporary+christian+piano+sh', is flagged as a malicious redirector. The document body itself is heavily obfuscated but appears to contain the same URL, suggesting a lure to a malicious site. The presence of numerous links points towards an SEO spam or redirection campaign.

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.com/wix?keyword=free+contemporary+christian+piano+sh
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/43407860658.pdf
    • https://cdn.shopify.com/s/files/1/0431/1062/9532/files/assistir_tartarugas_ninjas_desenho_d.pdf
    • https://cdn.shopify.com/s/files/1/0440/8826/2821/files/nafuwe.pdf
    • https://static.usrfiles.com/ugd/d1d005_565720f3582346108b0624347c584fa9.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8d9684a554340108e5e40299a7909a0.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_7191d0e7f9314e65b80c50f9288cefa6.pdf
    • https://static.usrfiles.com/ugd/455f95_bcf112894da740b3be552920d7bcd4e5.pdf
    • https://cdn.shopify.com/s/files/1/0437/3885/7623/files/38047499054.pdf
    • https://cdn.shopify.com/s/files/1/0431/3828/5725/files/ansible_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/tatagefakosagunig.pdf
    • https://cdn.shopify.com/s/files/1/0461/7971/3177/files/jusuvivenarusofowegulizun.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/ronuvijebobeluwemamemov.pdf
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/mammoth_mountain_10_day_forecast.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_off0000633c.bin
e1106fb53a7357d472cdd79bdca96a6d33b87663a171769bc372b83b936dd9eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633C 5200 bytes
font_01_sfnt_off000074bb.bin
de64c467207274427f8782c3f6e0ba7f72084166d003de7f5096221725dd7b09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BB 10272 bytes

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