Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed80ab5d0f68da4…

MALICIOUS

PDF

35.3 KB Created: 2020-08-22 21:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e3b6b8e9fc60dccfdc0e1ecd07f936f SHA-1: d569d8a811260fe12d1e2e73eaad696ec4b1423a SHA-256: 7ed80ab5d0f68da4bdd1a22a9afbae7c1cdc59613d648a936414149c95f85076
120 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior through a high density of embedded links. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a link to known malicious redirector infrastructure, specifically 'ttraff.ru'. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of external links, with 'cdn.shopify.com' being a dominant host, potentially used for SEO manipulation or to host further malicious content. The document body contains garbled text but includes the suspicious URL and several Shopify URLs, reinforcing the link farm observation.

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/pify?keyword=ile+d%2527+oleron+surf+report
    • http://vosuma.juddbristo.com/uploads/1/3/2/6/132681947/fedagedokifapog.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/fajalusefikefodetubom.pdf
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/9619500626.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/47426829006.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/bilirrubina_directa_elevada.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/facebook_all_photos_and_videos.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/menakufozogetufixosav.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0173/files/63570465004.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/widening_joints.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/xinavilojujurufe.pdf
    • https://cdn.shopify.com/s/files/1/0463/7402/7419/files/2824378302.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_off00004631.bin
1fb601a884a678d5684b0fd576591fa96a56e4446a2bbd39a25ededd0d20e9b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4631 4796 bytes
font_01_sfnt_off00005696.bin
39a0e579dd116e08e20b6d0af2add12ba9a28659aa1640b8217e2b9a29a997ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5696 13648 bytes

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