Malicious PDF — malware analysis report

Static analysis result for SHA-256 243d57afe835b643…

MALICIOUS

PDF

41.1 KB Created: 2020-08-31 05:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f033986560a13242c453a2ad7dd314d SHA-1: 0a8d29026003322d01a87bf228bb40949ec679ea SHA-256: 243d57afe835b6431bbd294f8fb0fd0e9624bf141fd99a57479ef8c5c68a352e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/wix?keyword=crazybump+maya+rudolph'. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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/wix?keyword=crazybump+maya+rudolph
    • https://cdn.shopify.com/s/files/1/0433/8227/6250/files/mahabharata_story_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/80678814170.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/gokegisivuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zejakepujubuk.pdf
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/gravity_rush_2_trophy_guide_and_roadmap.pdf
    • https://cdn.shopify.com/s/files/1/0440/3000/1302/files/nadatodoxizitoriwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/biotechnology_class_12_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/33940680968.pdf
    • https://static.usrfiles.com/ugd/b8c837_9924ba6f3a9b4606930d5e5cfdb9bdef.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e81fd44c89242d781c1bddc7448a2a8.pdf
    • https://static.usrfiles.com/ugd/8c0e65_e7ab9dfa31ff43b18631ef2d5dbe6ed3.pdf
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/1077563483.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/23486654726.pdf
    • https://cdn.shopify.com/s/files/1/0460/7311/8884/files/what_thickness_of_sheetrock_for_ceiling.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63529720688.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_off00005fd7.bin
440f8cee246d00df5ae280d084f66a38fce5ada5b949c30bc45182456ce3fb7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD7 5216 bytes
font_01_sfnt_off00007177.bin
19ee3eecbf6eaf9ef1983dacef50ae2b33546e98ddeccb850b97d8f645d2ff25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 11008 bytes

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