Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba55677d66bab7f2…

MALICIOUS

PDF

48.5 KB Created: 2020-08-15 05:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b175d1b8ca4d451c86dd377231e602c SHA-1: 1f6402158bbe539bf2a938c36c0d3b6b101bf553 SHA-256: ba55677d66bab7f261dca5da30dfc5bad042f05261f697143a91dc197c7ff86a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, but one critical link redirects to 'ttraff.com', a known malicious redirector. This suggests the document is part of a link farm or SEO poisoning tactic designed to lure users to malicious sites. The presence of the 'hepatorenal syndrome treatment guidelines 2016' keyword in the malicious URL further indicates a potential phishing or scam lure.

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/pify?keyword=hepatorenal+syndrome+treatment+guidelines+2016
    • http://gonox.yantraearth.com/uploads/1/3/0/7/130739664/pisexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4236/files/wifuxawaleluzikipibifol.pdf
    • https://cdn.shopify.com/s/files/1/0432/6388/5472/files/29207274012.pdf
    • https://cdn.shopify.com/s/files/1/0437/8427/4069/files/building_design_and_construction_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/91101286777.pdf
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/pexepuxiwor.pdf
    • https://cdn.shopify.com/s/files/1/0449/1840/7335/files/warhammer_40k_8th_edition_rules_vk.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/bach_minuet_in_g.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/71831167368.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/julibedepo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8542/1978/files/71252255032.pdf
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/28047495939.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_off00007f05.bin
73330262baadabe69d91101256f7d8872d4f7c485078b5a84bbe772c7507d751		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F05 5820 bytes
font_01_sfnt_off000092c8.bin
667a916b57af22a8142e972747b619864b8a3e7efb3a31f4e433c0dd7e7acf3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92C8 10528 bytes

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