Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba3125d9b93c9662…

MALICIOUS

PDF

49.1 KB Created: 2020-09-16 16:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b47641c69fc9c04b5180f8fbb5f56dd SHA-1: a6f149edd8710f42bfd2dfa631623e35b0564303 SHA-256: ba3125d9b93c966234d9066ef302cac732b3ef95f672200ee1fd0bc9a369b926
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.club' which is associated with malicious activity. The document body, though heavily obfuscated, contains the same malicious URL, suggesting it's intended to lure the user into clicking it. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm strategy for SEO poisoning or distributing further payloads.

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/wix?keyword=british+home+stores+home
    • http://files.wce5th.com/uploads/1/3/1/6/131607054/wojubofulezubuk.pdf
    • http://files.oe-suppliers.org/uploads/1/3/1/1/131163667/voxemisofomodaz-ririlinagegize-digozokose.pdf
    • https://cdn.shopify.com/s/files/1/0440/1309/3029/files/proyectos_de_arquitectura_sostenible.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/dollar_tree_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/78932246219.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/macquarie_foundation_annual_report.pdf
    • https://b371eb4b-5f51-4e4a-be79-89b896354690.filesusr.com/ugd/145364_3342c36e248a4f4fa087accd834e7adc.pdf?index=true
    • https://0d512472-f808-11ea-a328-fc4dd43d38a6.filesusr.com/ugd/017c44_9160600306b848a2a2db36b99484c8b8.pdf?index=true
    • https://41fc957c-6dd1-421d-be52-b2d41edd1c53.filesusr.com/ugd/3bcfef_10ea0383d6004426b98617308b507a7f.pdf?index=true
    • https://4141477d-4716-46a4-9811-c1b13a48f416.filesusr.com/ugd/f1780b_c73f6cbe0fef492ea4b1a95f1a055b15.pdf?index=true
    • https://fa5801b5-de68-45c9-8e8e-732a82cd1967.filesusr.com/ugd/2c8d66_7921da934e13465cb7f8bbd80eefe14b.pdf?index=true
    • https://4d85019c-1b54-495b-a99d-e5e1b6d447f7.filesusr.com/ugd/cc3ca9_50dbaaf6e4104e17a8ceb000e1d2eeaf.pdf?index=true
    • https://7a313d92-096c-423a-af0a-19791eeb4202.filesusr.com/ugd/c83fdb_cb042ad11d1a468785e236635d6994e0.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_off00008459.bin
9426ab72d669922bcf8ff18fe80d7c98af7cb4e643f53aa50930de5254b6daf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8459 4732 bytes
font_01_sfnt_off00009448.bin
e1f85cadcc95a3b19a4a9aa89ee79d8d7c00353f27d74c20811ace1143e4dbd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9448 10428 bytes

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