Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1416d7167e6179…

MALICIOUS

PDF

46.4 KB Created: 2020-08-19 05:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8661a81875b756c25796e99e603cce79 SHA-1: dd1423af6dc4af502f9a15ed4a4622c262f268c1 SHA-256: 9f1416d7167e617916f5b0d09624a301db7ec16e11ce5433f4b1332eca641500
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=android+material+button+only+icon'. It also exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0433/5190/0310/files/lurujenazora.pdf'. The document body, though heavily obfuscated, contains references to the redirector URL and appears to be a lure related to Android UI elements. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=android+material+button+only+icon
    • http://files.digschooladmin.com/uploads/1/3/0/7/130740242/1649674.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/lurujenazora.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/dulitowufe.pdf
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/23311087887.pdf
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/bevepebolekowe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/kubuforomifupitomep.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/92073697097.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/dipakujokokoxixa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/vanenibegobanew.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/arquetipos_femeninos_y_esencias_florales.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/64804147078.pdf
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/forasipupumo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/31279880538.pdf
    • https://cdn.shopify.com/s/files/1/0440/6758/6213/files/31029546828.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_off000077fb.bin
89b46a6fd971ac77710531a639777c30c3dc101d81297e22d11895bb35260bb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FB 5140 bytes
font_01_sfnt_off00008956.bin
e8c30293adb36dec179d579214a32dba6b06894ab5e62f224b58448a5c7b1fa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8956 10224 bytes

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