Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c013a6fd1466448…

MALICIOUS

PDF

75.9 KB Created: 2020-09-19 01:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf35e6e409cabe7e4522e0bea300a0a8 SHA-1: de4f62922fb0d9ed3854a4df98934faab11d82e7 SHA-256: 9c013a6fd1466448cc0fbe48afbaa85a2ba835265097e15b6340aecd3c586a3d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of links designed to manipulate search engine results, further supporting a malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains a URL that matches the redirector link found in the heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=artemis+young+justice+real+name
    • http://xagibotus.betsyeliot.com/uploads/1/3/0/9/130969559/cfaae10.pdf
    • http://sonetoz.glassartenergy.org/uploads/1/3/0/8/130814669/2359576.pdf
    • http://files.alicesadventuresinrunningland.com/uploads/1/3/2/8/132814465/sukadagizotowilaku.pdf
    • http://rebom.firehawkllc.com/uploads/1/3/1/4/131437130/9304731.pdf
    • https://6f527355-1680-4ba9-850b-aeadb50a4f12.filesusr.com/ugd/e00bd3_ee55ff9ae24a4694a78022e74dbf72ed.pdf?index=true
    • https://29db469f-3344-4ee8-ac28-4c09ca95c421.filesusr.com/ugd/bcfc12_b40821b00c7e4690b465f573726d959f.pdf?index=true
    • https://6c00b38c-031a-4195-8dc9-4f75b8857c45.filesusr.com/ugd/95ea6b_27718aa1535941bfab3fcf57bc44f04d.pdf?index=true
    • https://a4209833-1aea-49c4-92f2-798a5285ce5c.filesusr.com/ugd/754d94_64e89e2287c241c88c42087a8472d231.pdf?index=true
    • https://d8433167-83f7-4907-99a0-8d039b300c05.filesusr.com/ugd/3b47cb_cccf510afa9b4f40a40a8ed441b8baef.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/8388/1893/files/32157229595.pdf
    • https://cdn.shopify.com/s/files/1/0434/0790/0835/files/27118501102.pdf
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/fazewiwulofawazabujazapof.pdf
    • https://cdn.shopify.com/s/files/1/0454/7484/0742/files/avery_labels_5160_template_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0462/4272/6042/files/timeline_excel_free_template.pdf
    • https://2696576a-7c0e-43b2-941b-92d02c1b0f5f.filesusr.com/ugd/3bbd68_0a1f8a65c8fc4822854b86251bf0424f.pdf?index=true
    • https://4ffb9bb3-1194-46b1-8912-e07bb8e9a44a.filesusr.com/ugd/229b11_8c2cf5596f0d4428b12ea982a2b9ebc5.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab27.bin
7fa492144dc45f6eadb47cb0b8e195d571457364397f155a68125b8e54dbcc23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB27 2972 bytes
font_01_sfnt_off0000b5a9.bin
d307ad2f888a411dd66ea694bbc15325ba45c5251feb48ee91894feb2ee954f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5A9 5284 bytes
font_02_sfnt_off0000c79f.bin
781c08fb35a0f3dc916e9e9701bfd197e37fe8383b8f5365f40826a46500199f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC79F 10176 bytes
font_03_sfnt_off0000db33.bin
5232e5163ef17fc1ceca323c85de1f5414efefc0f3486193bccb1d8ecd7b73b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB33 15388 bytes
font_04_sfnt_off00010b55.bin
afc65fcb1798a3ccbbe08d00f02494ea42338a781c826309791372f5a7a7907d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B55 16468 bytes

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