Malicious PDF — malware analysis report

Static analysis result for SHA-256 276564e1423ef9c6…

MALICIOUS

PDF

45.3 KB Created: 2020-09-13 06:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4110d33a058134f7df2b1443c3482260 SHA-1: 02a981b372e1621ec69ae937cb28347d1ad0c21b SHA-256: 276564e1423ef9c61a67e40079f22d83eee37646677a4cee4982e1f4fad91c73
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The document body, though heavily obfuscated, contains references to 'neurons worksheet answers' and includes URLs that are likely part of a scheme to drive traffic to malicious sites. The primary attack pattern involves luring users through deceptive links, potentially leading to further compromise.

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.club/pify?keyword=neurons+worksheet+answers
    • http://berajod.knightsautowash.com/uploads/1/3/1/4/131453194/3601296.pdf
    • http://riluli.justinhoughton.com/uploads/1/3/2/6/132696021/abe9076c5.pdf
    • http://gijerat.alpacacentral.ca/uploads/1/3/1/4/131408024/684df4034b.pdf
    • http://files.hometoaz.com/uploads/1/3/1/6/131606605/xatuvagakenuliwuwum.pdf
    • http://wotenulug.placercountyreviewagency.com/uploads/1/3/1/6/131636733/jiruxus.pdf
    • https://cdn.shopify.com/s/files/1/0434/2926/5564/files/agricultural_systems_of_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/bayesian_inference_introduction.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/56537362657.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0395/files/51410050080.pdf
    • https://static.usrfiles.com/ugd/1e32c2_ada7afdddbe34f9ba93a9f7fdd9fb83b.pdf
    • https://static.usrfiles.com/ugd/0d018b_57c79599b79b4eec909f0e9f9ff35b99.pdf
    • https://static.usrfiles.com/ugd/9edd50_d643aeb827c4453aae78b8b7274729d1.pdf
    • https://static.usrfiles.com/ugd/b148e5_9bae678335f946ac82e3426208478115.pdf
    • https://static.usrfiles.com/ugd/0dcf4b_76fa70e566aa42eb954c99146494e770.pdf
    • https://static.usrfiles.com/ugd/9cb927_943475930c2e4507868438b70af7a045.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_off00006688.bin
5c9af5c3cbf57e52278afe8a35d19166debd27dff367929015419fa9188282ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6688 4700 bytes
font_01_sfnt_off00007685.bin
b83d3e297e5ab47a4a40ecd59468ed35cd77b2b72d21e82ae15dcbb869d11945		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7685 10476 bytes
font_02_sfnt_off00009a62.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A62 4324 bytes

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