Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b12dfa69dbd3bc…

MALICIOUS

PDF

52.7 KB Created: 2020-08-31 01:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 504babbe71a954596035c4811258d57c SHA-1: e05e9b151484d963f56037af9e38422744b54bb8 SHA-256: 52b12dfa69dbd3bcd09ee10696982b73c220fd6d6b49d8a01b0fbc857172e4e2
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, specifically pointing to 'https://ttraff.me/wix?keyword=best+infusion+for+astora+greatsword'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being to a Shopify domain. The document body, though heavily obfuscated, contains the same redirector URL and a Shopify URL, suggesting a lure to external content. The primary intent appears to be directing users to malicious infrastructure via the redirector.

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.me/wix?keyword=best+infusion+for+astora+greatsword
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/gugafajofukijufes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/gawozudunimejatiwika.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/jusoruro.pdf
    • https://cdn.shopify.com/s/files/1/0436/8944/3493/files/bible_story_books.pdf
    • https://cdn.shopify.com/s/files/1/0449/4727/5931/files/29440192647.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12086745869.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/zunuzurebewidud.pdf
    • https://static.usrfiles.com/ugd/82e28d_b4f362c46b6244b1b8d3bccbbc5b5dc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_5097ae9a06ab421aaeccb800d9fed630.pdf
    • https://static.usrfiles.com/ugd/289c5e_91889144d6e348dd9ddcf89da18da6ca.pdf
    • https://static.usrfiles.com/ugd/eda9ba_420ed75ab2b9460bb3a73201f9b102d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a8e8b88ce3f42ecaa4fc7149577fd9a.pdf
    • https://static.usrfiles.com/ugd/97634b_855ab3c7254f438d8808fc62a5d5db58.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_off000083b4.bin
81e809847b3a285a07eb8dff226fed8720ad9e1ebb5f8001ecb676707baa0ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B4 5184 bytes
font_01_sfnt_off00009576.bin
71b7ebcd3bcc0098d3366f5039e87293aa9b5a1709f5794fe0f8e3ca3bf6ed3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9576 15628 bytes

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