Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b64022a7216b0f1…

MALICIOUS

PDF

41.9 KB Created: 2020-08-12 09:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e3257ad582a2313928f39b04f869b00 SHA-1: 16025ff7f621c71dfc0f44bc0eba1055c7639c1d SHA-256: 4b64022a7216b0f11ab2f6a5c75374c791971c1fb7b36d0ef775024b531319fc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. This indicates a likely attempt to lure users to malicious sites. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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.cc/wb?keyword=mantis%20tiller%20manual%20sv%204%20b
    • http://files.actacoustics.co.uk/uploads/1/3/2/3/132303013/676ae061122a80.pdf
    • http://files.kennethvisionmedia.com/uploads/1/3/1/4/131453067/329923eb221f.pdf
    • http://files.shutterpandemonium.com/uploads/1/3/2/6/132695301/xawulerenorepoj_zefufimesi_gigimi_xudurafalu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/30391759301.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/66050211884.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/luziruzerubame.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/79298436621.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/que_es_el_desarrollo_psicosocial.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/tasemasawiranalomebaxube.pdf
    • https://cdn.shopify.com/s/files/1/0432/4691/1643/files/vendo_coke_machine.pdf
    • https://cdn.shopify.com/s/files/1/0440/6630/8246/files/59506257422.pdf
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/mesagagabepuxavoferulozis.pdf
    • https://cdn.shopify.com/s/files/1/0439/2887/9272/files/zunotowozobufupulemiguk.pdf
    • https://cdn.shopify.com/s/files/1/0435/8347/1771/files/43425586329.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/94054346657.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_off00004b5f.bin
692e1b8d26f032846e9c26d034745240f0d967d96961f6cf4cdfb91c508e12f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B5F 5124 bytes
font_01_sfnt_off00005cb9.bin
3bbf8ca50f3c1ce9c36f35693e4fca86829b21aa1d5cf21740510430a5e6b846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB9 10428 bytes
font_02_sfnt_off0000806d.bin
60259eb58aaa6aa6f5f5c3386947b165ed7701f42224ff4fcfb38bd30d8fb3af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x806D 17672 bytes

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