Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff53ebad0c94928f…

MALICIOUS

PDF

90.3 KB Created: 2020-08-31 02:33:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52bf82b1e5e65e252bb62d3de3c8b580 SHA-1: e3ecc16260c923cb58cddfa92a0de318d897129e SHA-256: ff53ebad0c94928f5f2697a7c84c82c36679d5c45bc7ee6df46959f0a077b2f4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=reglamento+de+telecomunicaciones+2015'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to trick the user into visiting this malicious site. The file also exhibits characteristics of a link farm, with numerous embedded links, likely for SEO manipulation or to distribute malicious content.

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/wix?keyword=reglamento+de+telecomunicaciones+2015
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/5363974817.pdf
    • https://cdn.shopify.com/s/files/1/0436/9448/9755/files/7814666077.pdf
    • https://cdn.shopify.com/s/files/1/0434/6000/1945/files/spanish_speaking_countries_free_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/best_google_data_studio_templates_2019.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/sovewujusakujuso.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/dutifilurik.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/gidasavuvexonujido.pdf
    • https://cdn.shopify.com/s/files/1/0433/9515/4069/files/ielts_general_writing_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9144/4390/files/lijejuwivipopu.pdf
    • https://static.usrfiles.com/ugd/df4650_6c469bb3563541caaa82d0c924546343.pdf
    • https://static.usrfiles.com/ugd/405339_70c14202aeb94ccca92a20d6e4dbcbcf.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/72059317166.pdf
    • https://cdn.shopify.com/s/files/1/0438/1101/2770/files/jawefawigajusajaruxedegik.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/tivoliku.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/utilitarianism_notes.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_off000123b3.bin
d071b9ddbd563476add782c41589da657c0e9b275d28b6ad4193f1ef2250525a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123B3 5620 bytes
font_01_sfnt_off000136cb.bin
7e3a32e24270e3198131bf261068013a86de1a3ab1aca399c40fccf3b7ad42e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136CB 11060 bytes

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