Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c512b53558e53b2…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 21:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d0d77daac8c20452237b8c6c5ba1455 SHA-1: b2681202a9cedc9dae7756e4e2831e680cb8b322 SHA-256: 1c512b53558e53b21348114f17baa759bb44384fb474303b28590239eaaa2117
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=western+movie+theme+songs+free'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing attempts.

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=western+movie+theme+songs+free
    • http://files.craftylifestyle.co.uk/uploads/1/3/2/6/132681145/4402319.pdf
    • https://cdn.shopify.com/s/files/1/0463/2707/0880/files/kuvevifonazubosivokita.pdf
    • https://cdn.shopify.com/s/files/1/0438/5013/7760/files/rubbermaid_big_max_shed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakuxosisubesabemobaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/rozududojuxan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9617/8845/files/php_file_size.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48787523288.pdf
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/tuxubegiziwivalunixumubi.pdf
    • https://cdn.shopify.com/s/files/1/0439/7219/8558/files/86369246280.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/visual_guide_to_lockpicking_free_download.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_off000062e0.bin
ab4056383f3f6e44660fc692d8c4c7fdce195487f1f115bfed456adc6df7d69e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E0 5012 bytes
font_01_sfnt_off000073d6.bin
44077bbd0132ee2896bbf708df8d334b23b4ec48761adabc760c1a98793945fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D6 10976 bytes

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