Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e423ba52581782…

MALICIOUS

PDF

33.2 KB Created: 2020-09-02 01:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4267e17157a48eb26002894b80e6e836 SHA-1: ee044822bf2267568ecec16688ad83ffdddf2d01 SHA-256: 42e423ba52581782e4ef660fdcc1c4df67594423fb7733b46bff6aecf8274a6c
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, identified as a link farm. One of these links, https://ttraff.club/wix?keyword=guidepost+books+miracles+of+marble+cove, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify, suggesting a coordinated effort to lure users to potentially harmful content. The primary attack pattern involves redirecting users through a malicious link farm.

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.club/wix?keyword=guidepost+books+miracles+of+marble+cove
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/lapenesejakofivaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/7405/1491/files/defiguzitime.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/mijibosuboxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/noun_phrase_in_english_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/54416084056.pdf
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/atk_package_asus_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/kolufufasukof.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/add_caption_to_gif.pdf
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/no_in_every_language.pdf
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/57434721785.pdf
    • https://cdn.shopify.com/s/files/1/0437/7991/5937/files/sixomutud.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_off00004540.bin
653cce31cdc9e076902ca9a16c1db62eba8346866f53a29abb626eee674a70ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4540 5596 bytes
font_01_sfnt_off00005838.bin
e50c660e11ba9711e1044f52d59b95f4550c646dc2cd2ba4c35bd47fcdda5b75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5838 9392 bytes

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