Malicious PDF — malware analysis report

Static analysis result for SHA-256 be087e30ec5f633a…

MALICIOUS

PDF

46.1 KB Created: 2020-08-17 18:10:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49be4c0fa549bb8692c21b437b7de9f4 SHA-1: a375829ee159fff6e6aaf0f885e22baae433f1e5 SHA-256: be087e30ec5f633a5a2699dec84c39e29b9da51e3b0e9d6bc70fd3274442ac2d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and other embedded URLs. The primary attack vector appears to be social engineering via a link that leads to a malicious site.

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.com/pify?keyword=organic+chloramine+formation
    • http://zisefaza.d2montessori.com/uploads/1/3/1/8/131856979/2ed10b148540ef.pdf
    • http://files.sharpeningdoneright.com/uploads/1/3/1/3/131380292/vegula.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/pdf_epub_to_kindle_tool.pdf
    • https://cdn.shopify.com/s/files/1/0441/0903/7720/files/xilejusu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4957/3784/files/manual_bienestar_animal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/32382795170.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/davafizexudasebolizuriga.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9648/files/properties_of_acetic_acid.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/xat_quantitative_aptitude_questions.pdf
    • https://cdn.shopify.com/s/files/1/0434/0252/6872/files/17804114616.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/zilofosakujiwiwun.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/tukui_vs_elvui.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/93078977880.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/29551613728.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076ae.bin
93bfbc8088d4d78d47beeb9fcd691ea3efba6d5fdfa6c2aafd30595551c39120		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AE 5144 bytes
font_01_sfnt_off000087fd.bin
c1f11646983e3a00650441e5b26b083ee9f5a597eb20a6e6eca1159565186b24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FD 10336 bytes

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