Malicious PDF — malware analysis report

Static analysis result for SHA-256 3beca794e5f86c4a…

MALICIOUS

PDF

45.3 KB Created: 2020-08-02 10:38:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 640c7d9801dd8ced700288f4edce1f87 SHA-1: a89bf0187e5f659bc6e7c0796e5bc906134a1a5c SHA-256: 3beca794e5f86c4ad0a60b93d8be7dc6f6ad1e2738f9d99faa5504f61642cda3
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, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=elemental+shaman+hearthstone', which is flagged as malicious. The presence of numerous other links, many pointing to Shopify domains hosting PDFs, suggests a link farm or redirection strategy. The primary intent appears to be directing users to potentially harmful external content through these links.

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.ru/pify?keyword=elemental+shaman+hearthstone
    • http://files.bridlevale.com/uploads/1/3/0/7/130775838/2025624.pdf
    • http://files.kilookas.com/uploads/1/3/1/4/131407695/vogagotinufokaxipiw.pdf
    • http://files.pulse-studios.co.uk/uploads/1/3/0/8/130873738/vevob.pdf
    • https://cdn.shopify.com/s/files/1/0429/6163/3439/files/57216983020.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/50014366824.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/add_event_listener_to_multiple_elements.pdf
    • https://cdn.shopify.com/s/files/1/0432/3655/6962/files/22578891855.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/73279531822.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/newagoregaputawiwopev.pdf
    • https://cdn.shopify.com/s/files/1/0433/8299/7148/files/vapebexokowip.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/dragon_ball_full_episodes.pdf
    • https://cdn.shopify.com/s/files/1/0439/0407/3880/files/laxapozofap.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/12116266932.pdf
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/66472857996.pdf
    • https://cdn.shopify.com/s/files/1/0428/6090/4604/files/nenutinexabamosesujunag.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/52105004156.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_off00007438.bin
9a0425233a04f001b10f26ce82f5a83125af3c995a74df978dd33c09bd2a2ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7438 4884 bytes
font_01_sfnt_off0000849f.bin
de850d899783bddd32b0cdd0f041013d9fb5ffbea12948d33e40d91926ba067e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x849F 10588 bytes

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