Malicious PDF — malware analysis report

Static analysis result for SHA-256 c271aa92b6517eee…

MALICIOUS

PDF

36.8 KB Created: 2020-09-07 08:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b1acb038e285788d1c0809bfe04f7c8 SHA-1: 38c7687812a638a5e3a6bd6c2d468ca090eb2f2c SHA-256: c271aa92b6517eeed5ab9d865043b1bd6aff1acb35ca278fe884e41082167001
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=best+bhajan++pagalworld.+com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same search query, suggesting a lure to trick users into clicking the malicious link.

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+bhajan++pagalworld.+com
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/56596840942.pdf
    • https://cdn.shopify.com/s/files/1/0456/4939/5879/files/zudovululalijewa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90554838216.pdf
    • https://static.usrfiles.com/ugd/0bfb20_75bb58f9e00e4ef5a786bd1a8e499636.pdf
    • https://static.usrfiles.com/ugd/bb3bf9_eb881328153b4eb39abed9f551be2aab.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_aff2f704c40c41d28c77880a83b58f9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffb431bbda8b40b79b509f194029467b.pdf
    • https://static.usrfiles.com/ugd/67e251_79dc6f26879d496194b4d50cb0dc86d8.pdf
    • https://static.usrfiles.com/ugd/838e7e_752179c6255a4a499e123ceb98439e9c.pdf
    • https://static.usrfiles.com/ugd/ed64d2_ff795fd9b4944148abd256f76d930c3b.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/4632372516.pdf
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/banusaros.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3356/files/how_to_install_nvidia_drivers_ubuntu._run.pdf
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/mekaxinorikagabizi.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_off0000518b.bin
1bbb229f64c2067d48fe4cb4b6ce14f9f997fd6c337a955afa6d3e843066d4e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x518B 5876 bytes
font_01_sfnt_off00006573.bin
6f0732e983e3ce965b727da7eab257621420332f9906f08bcdb790fcf3ebc764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 9660 bytes

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