Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9885b9c4b9b9c9b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 01:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58d186bcb50cdcb28a48a4794b792320 SHA-1: 6551a84f93386eec13437f1328a05229acda08e8 SHA-256: c9885b9c4b9b9c9b5319d59c246c5d5565fe38043a2831d67c97f209e382dbbf
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=customer+centric+selling+pdf'. This indicates the document's primary purpose is to redirect users to a malicious site. The document also contains a large number of embedded links, characteristic of a link farm, further supporting the malicious intent. No scripts were extracted from this sample.

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=customer+centric+selling+pdf
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/bulgaria_league_table_form_and_stats.pdf
    • https://cdn.shopify.com/s/files/1/0465/1207/9006/files/lasasotavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4192/2977/files/zutivujupu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/timuloba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/malayalam_calendar_2020_free_download_deepika.pdf
    • https://cdn.shopify.com/s/files/1/0433/8876/4316/files/abstention_verb_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/nios_deled_assignment_506_cover_page.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/68281197419.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/17618293331.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/simple_classroom_rules_for_high_school_students.pdf
    • https://cdn.shopify.com/s/files/1/0428/8049/9879/files/windows_8._1_activation_tool_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/service_provider_agreement_template_free.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_off000066e4.bin
2eb2dbc0b8fbafb60f9e47d002b4fa9f6bffa08274a21b0cdbc5a529bd2add35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E4 5172 bytes
font_01_sfnt_off00007867.bin
c2b349f547462bb58f2fe828f73d657e7b0bed5f3144aac54be8c6c28afe3917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7867 10084 bytes

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