Malicious PDF — malware analysis report

Static analysis result for SHA-256 83dd1f06a800d0aa…

MALICIOUS

PDF

42.9 KB Created: 2020-08-02 21:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eadee2309a3189e9c610bc747ba88051 SHA-1: ac36b48a5f778c865ddfd6d21c4d0a5ad74caa03 SHA-256: 83dd1f06a800d0aa2946c19fc51c0035626ecacd8beefecaebc3e5793cbeebf7
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which points to 'https://ttraff.ru/pify?keyword=movie+box+on+mac'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the same malicious URL. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's intent is to trick the user into installing something, likely malware, by posing as a necessary update or extension.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.ru/pify?keyword=movie+box+on+mac
    • http://files.bwmusic.net/uploads/1/3/1/4/131453902/xopevofafidozefemoxo.pdf
    • http://nanapas.kimberlybeckfineart.shop/uploads/1/3/0/7/130738837/keduxolig.pdf
    • http://files.southernaddictiondecor.com/uploads/1/3/1/6/131637362/7413174.pdf
    • http://files.junamustad.com/uploads/1/3/2/6/132682471/bedalavuliwimidok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/62055312276.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/46338403418.pdf
    • https://cdn.shopify.com/s/files/1/0432/8013/8398/files/ccnp_switching.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/26185534281.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8581/files/49547984981.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0565/files/15460171877.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/miresufawomadi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6432/6299/files/tevaxajepuzonobevo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44994208471.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/xonep.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_off00006bd9.bin
4658679ac5036d5b621ececaa1b67ab05c8f27c8189b3805d0c077823281ace5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD9 4912 bytes
font_01_sfnt_off00007c96.bin
81334a089b1737eed5f0f90fe9e7f7ce990e0d0bb83cbc5ad89b39964992c36f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C96 10128 bytes