Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e68efe9b71ebe6…

MALICIOUS

PDF

50.9 KB Created: 2020-09-22 00:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0cdce38c43faf04da6eade426cc21c3 SHA-1: 0902c2d135d4173640fc789b3758b2f07d96f5d9 SHA-256: d3e68efe9b71ebe641c304751cba50de676b98f3e18a3361b06bc8004a1e20de
154 Risk Score

Malware Insights

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

This PDF document contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.link/wix?keyword=the+winning+brief+pdf+download', is flagged as a malicious redirector. The document's body text, though partially corrupted, includes metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous links points towards a phishing or malware distribution attempt by redirecting users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.link/wix?keyword=the+winning+brief+pdf+download
    • http://files.tualatindar.org/uploads/1/3/1/4/131406498/sonolale_mowoka_pulipi_lowolasiwevizup.pdf
    • http://files.themillercompany.net/uploads/1/3/1/0/131070173/7500719.pdf
    • http://marod.lolas-ecec.org/uploads/1/3/1/4/131453133/28bd9e03c1451ab.pdf
    • https://0d98338d-8f78-42e6-97dc-269b8dc99bdf.filesusr.com/ugd/2b3f46_f9b5187f57b94f7699b5197ec8385420.pdf?index=true
    • https://2e9412aa-e272-447a-b1d4-1cfd59af203f.filesusr.com/ugd/24deb6_c240d352066d45a08f4bab19d3fce481.pdf?index=true
    • https://13651bd4-b61f-45db-83d2-760e9bd5c61b.filesusr.com/ugd/9d66c7_e1bb7491e9ba4838896f7862ae927997.pdf?index=true
    • https://0c5a4762-1ce2-47e8-8fcb-a018e42b6bf7.filesusr.com/ugd/917232_7cf337cb6d76426191977c3d8251edea.pdf?index=true
    • https://0fb02972-db54-428d-a266-fb54bd8da42d.filesusr.com/ugd/e6e573_4623e4e2195e44f6bd49055db3a54bad.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/5698/7303/files/weather_report_fairborn_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0479/9836/9951/files/the_looting_machine.pdf
    • https://28948441-0dff-4d5c-bdc7-2ab975929042.filesusr.com/ugd/451a43_03417dc89be445739e26c968a90b62b0.pdf?index=true
    • https://8630493f-343a-41e6-b19b-d6f2679ef40e.filesusr.com/ugd/1e557c_33ec35c560d745e6989fa21bcd98c398.pdf?index=true
    • https://93f329a2-fbd4-4d24-97f4-249ac6c831bf.filesusr.com/ugd/53cfc7_9743255599cb4a17820df063c6d36032.pdf?index=true
    • https://ad6275a9-b755-475d-ba96-0a2fd0db4988.filesusr.com/ugd/9ea9b6_260595b75760490580aaf30656311454.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_off000087ea.bin
feb6797345e2a15637d8f1d4785a20ea3eb8592c2a8810ce1184dfec8837bea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87EA 5308 bytes
font_01_sfnt_off00009a01.bin
3419b65992c3aa850fdb2122d368cfbe48a473b8bb92636bc55dc7880e27df1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A01 10780 bytes

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