Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3cd10d7ed641473…

MALICIOUS

PDF

43.2 KB Created: 2020-08-10 19:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5884b8f9ac3d530be992e5e5daed49ad SHA-1: 86c9cce9fa1b0d5491701a35081d7acca4eaac65 SHA-256: c3cd10d7ed641473a8fef662e400bc1ebc3151ef1328f35f4451545783299475
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, with the primary link identified as a malicious redirector. This suggests the document's purpose is to lure users into clicking these links, which then lead to malicious infrastructure. The presence of a link farm further supports this, indicating an attempt to obscure the final malicious destination.

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=effects+of+financial+stress+on+academic+performance+pdf
    • http://luresaki.linwoodheightsaz.org/uploads/1/3/1/3/131384771/korewukiduvi.pdf
    • http://files.togo4christ.com/uploads/1/3/1/3/131398097/2308972.pdf
    • http://files.restyle-homestaging.com/uploads/1/3/1/1/131164473/5ce15ef47f8.pdf
    • http://files.bankdeets.com/uploads/1/3/0/7/130740252/2ebfa0211d1272.pdf
    • http://ruzakamew.amsarstudios.com/uploads/1/3/0/7/130738837/tutupuk_gafaxebi_jifik_dovijofi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/difemirezusazi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/sijafe.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/37617874127.pdf
    • https://cdn.shopify.com/s/files/1/0434/0596/7527/files/carranza_s_clinical_periodontology_13th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1140/files/26706270932.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4308/files/84071037927.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7904/files/tedefenokujoribeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/48359982813.pdf
    • https://cdn.shopify.com/s/files/1/0430/6917/8017/files/38388601439.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/carolina_ale_house_greenville_sc.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/67282889677.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_off000069fa.bin
fd3cf15e66b27b9e77354463dcbd7d7db8d0b672d72f7f4aeae581856f907f79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FA 5256 bytes
font_01_sfnt_off00007bc2.bin
52848b588a3313a1bee8e54354d9a62c574e1082ecf2bd6a8f4f6043feee0563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC2 10472 bytes

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