Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f247f2342ad9568…

MALICIOUS

PDF

46.5 KB Created: 2020-09-19 18:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93d947fab7c263de0a502968bf93212f SHA-1: 22cb097b22e06e26b786eae4567d6b21f97e6bf5 SHA-256: 4f247f2342ad9568741c28d6a95b411de5c290f00c1308c5b014d83fe74289f0
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector, disguised as a study guide. The primary malicious URL, 'https://ttraff.link/wix?keyword=environmental+science+final+exam+study+guide', is designed to redirect the user to potentially harmful content. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to obscure the final destination and potentially engage in SEO manipulation for malicious purposes. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

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.link/wix?keyword=environmental+science+final+exam+study+guide
    • http://files.northsidepromenaders.com/uploads/1/3/2/6/132696598/kijupezikuvab-tasuruluwafiv-bajofed.pdf
    • http://rovujo.mysje.org/uploads/1/3/2/7/132740267/biguwokep.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/datosesipefepatefazaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/58786379544.pdf
    • https://cdn.shopify.com/s/files/1/0434/7166/7360/files/android_apps_maker.pdf
    • https://f2472d5b-cd95-45c3-943a-1204c95a0c67.filesusr.com/ugd/0994f9_a6663e167baa4b8d9aa7d60961b00095.pdf?index=true
    • https://4de878d6-7b00-4a56-8ccd-1a42f9591bb7.filesusr.com/ugd/cd1d52_1be12caaf5fe438e98b16873a85ed891.pdf?index=true
    • https://28862ee3-0ecd-47f4-9228-c2a302658354.filesusr.com/ugd/ef0078_f65bd64938c8499e82269792f5d9b662.pdf?index=true
    • https://2e8394f3-71ed-4a39-935a-d158945aa109.filesusr.com/ugd/493135_a922b157bd20477c967f083bb3aa21fc.pdf?index=true
    • https://bec1199d-d374-4369-a614-1c7640427f48.filesusr.com/ugd/6cfc61_ad8e227915ec4d8d8a8bea52665df476.pdf?index=true
    • 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_off00007708.bin
efbd9e1eee3ae8432bb442e1d2e5061d55f45b65edee862a9693f400e7039a32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7708 5528 bytes
font_01_sfnt_off000089d1.bin
fbea396bb80cc96b78f9064c9e2e3c9551a986e43b62c81b92d08adae1c94887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D1 10524 bytes

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