Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f5f6564987ba6b…

MALICIOUS

PDF

42.2 KB Created: 2020-09-18 13:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f11320637febc355ef5f7a43af84bc5 SHA-1: 3fdeb9a54ce216e00c162f7fa9d4b6ceea2fa9ac SHA-256: 26f5f6564987ba6b8e779dd05e3eb53f7568f85cf46c167267df278191680e1d
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including a critical heuristic firing for a malicious redirector at 'https://ttraff.me/wix?keyword=laura+charles+baltimore'. Another critical heuristic identified a PDF link farm, with the primary link being 'http://foporebik.shaunadevlin.net/uploads/1/3/1/3/131380505/lonitelejume.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=laura+charles+baltimore
    • http://foporebik.shaunadevlin.net/uploads/1/3/1/3/131380505/lonitelejume.pdf
    • http://vexosu.cococochran.com/uploads/1/3/1/0/131070301/d60cc53046d46.pdf
    • http://files.crystalridgewinery.com/uploads/1/3/0/7/130740149/6011109.pdf
    • https://cdn.shopify.com/s/files/1/0433/8440/6181/files/lofek.pdf
    • https://41fdc1ef-d952-48ff-8c46-9ea5b0d5ba8b.filesusr.com/ugd/d1d005_66fa4ac8f0ed449e9575d2a94998b7ba.pdf?index=true
    • https://4aeb8045-8fb9-44ee-9779-ca49e2eec579.filesusr.com/ugd/f35da0_b9ed315f5b714ed2b60fc13e8199e199.pdf?index=true
    • https://f5ad4d4a-5ef7-4d4c-a6de-df187c868325.filesusr.com/ugd/e54fc7_9341ba5b3b094a169e9d38a9e78f5d7a.pdf?index=true
    • https://9e715c9e-44c0-4011-ae06-723eb0acd67e.filesusr.com/ugd/0b1cf2_194b322addec45fd96773c3cf348cd8b.pdf?index=true
    • https://113b5b62-a2f7-45bc-82cf-ba602d8fa8c2.filesusr.com/ugd/bf0735_f5b3514b04b44ef79e3d93f9cb999cec.pdf?index=true
    • https://30e90438-0664-49d7-88a7-c91e8671fd1c.filesusr.com/ugd/bcd086_169c259a9e5a48b082cc8a1b06384e63.pdf?index=true
    • https://8a283435-fa2b-4bc6-89a5-157569334294.filesusr.com/ugd/6924eb_14e9589dd5844b54b884f34f33b307d3.pdf?index=true
    • 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_off00006712.bin
21ba59fcdd859609c78aa9682f4dc749201f8e204fe26b27e3e2f118842bb659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6712 5120 bytes
font_01_sfnt_off00007852.bin
f8363becdf74bf9f0bf9381f99fc7ae0388456ce60d4be0b752c293bb475dc53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7852 10596 bytes

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