Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e189105bde827e0…

MALICIOUS

PDF

43.7 KB Created: 2020-08-29 19:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 831c2ed5189c6bf70d25039e97bf4360 SHA-1: 7a98beac39d71d0b5e0aadaa4fc179a5a9071cda SHA-256: 4e189105bde827e08f3520964bacbeb750b214f4a7e25fab801cad3a185b50c7
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one pointing to a known malicious redirector. The heuristic firings indicate a PDF link farm, suggesting the document's primary purpose is to redirect users to potentially harmful content. No scripts were extracted, and the document body is largely unreadable binary data, making it difficult to ascertain a more specific attack pattern beyond link-based redirection.

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=greek+root+sym
    • https://cdn.shopify.com/s/files/1/0437/5245/6346/files/58602147573.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdf
    • https://cdn.shopify.com/s/files/1/0434/8372/5990/files/honda_rebel_450.pdf
    • https://cdn.shopify.com/s/files/1/0463/0813/0981/files/23839374891.pdf
    • https://cdn.shopify.com/s/files/1/0435/7691/8175/files/sobudigus.pdf
    • https://cdn.shopify.com/s/files/1/0431/2979/8818/files/assembler_fichiers_en_ligne.pdf
    • https://cdn.shopify.com/s/files/1/0432/3108/4708/files/sulivatovotibuji.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/lolokojituluwodomofi.pdf
    • https://cdn.shopify.com/s/files/1/0466/4259/3957/files/teoria_de_costos_comparativos.pdf
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/8528093321.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2a9a602e43c4a968887a957642c7d41.pdf
    • https://static.usrfiles.com/ugd/b8c837_f68bb4c00cd64a19912674786f0f43a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_88832ff918c442568b08c5cada25cd28.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f94.bin
44498920fe40a0c44ca9f95cd16f92207f1e048f090549c9c282936481268e4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F94 4420 bytes
font_01_sfnt_off00006ea7.bin
020c44fcb9f8bece5bdd9f58ebcdd3cdef763adceac22e23af54e77cbf5cf417		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA7 11100 bytes
font_02_sfnt_off000093d7.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93D7 4324 bytes

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