Malicious PDF — malware analysis report

Static analysis result for SHA-256 5537fe07de483e7a…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 10:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64f75ab73894471718527553fab3721a SHA-1: fd1d961e7a896e35b24c8864aa105e24a3066c04 SHA-256: 5537fe07de483e7a04bb024f77055425a1379f48e36e604638cf35e6c496e78c
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Star Trek Online' and the malicious URL, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

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=star+trek+online+bridge+officer+specialization
    • https://cdn.shopify.com/s/files/1/0434/0216/6435/files/magak.pdf
    • https://cdn.shopify.com/s/files/1/0438/4292/8790/files/43448262663.pdf
    • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/docusign_for_salesforce_installation_guide.pdf
    • https://static.usrfiles.com/ugd/ace02d_6002e91e5a89494b9a713293aa819e2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a3ea70532d946ad989ffdf749124f71.pdf
    • https://static.usrfiles.com/ugd/e3834b_1f19f4cb6f7a4277b428d06c37661585.pdf
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/womisenexobogezuri.pdf
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/hallelujah_chorus_tonic_solfa_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/28841058571.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/67697804760.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3b7e6ba1dcd4a3a8e9da07b81913988.pdf
    • https://static.usrfiles.com/ugd/cc03df_c1efffa60ca049969187fa25051c6b2b.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc7bac7b6b6c420b9bac38baf27c64c6.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_off00006481.bin
700bca0d0b6fe8775e752e303bb3a3aa60dec91838c407f88e2ab73c008ba4d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 5680 bytes
font_01_sfnt_off000077e6.bin
be8ea0ad9508a090d6770ad45a26a59b072ee58e2d45c98f1cabe621dfa4868f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E6 10392 bytes

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