Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9ba3dddfac12ec…

MALICIOUS

PDF

51.9 KB Created: 2020-08-28 05:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71ae4eba4cbcbc132699fc4292b54233 SHA-1: 941a8e9abbcb6c5379a80bf22d08f7d886f47dc8 SHA-256: 1a9ba3dddfac12ec958c54bcba66a7f52ce8c8e615b15ea412804abe5337cfe6
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=ficha+tecnica+test+de+la+familia', is designed to redirect users to malicious infrastructure. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to distribute malicious content. The primary attack pattern involves tricking the user into clicking the malicious link by presenting it as a technical data sheet.

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.cc/pify?keyword=ficha+tecnica+test+de+la+familia
    • http://files.metalmeltdown.com/uploads/1/3/0/7/130775755/36f932b68a.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/kuduguzatevomexijemok.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1687/files/20463569194.pdf
    • https://cdn.shopify.com/s/files/1/0429/5491/6006/files/vimotidu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0062/7363/files/58511787884.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/likedivetajezituravoxaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/75470588049.pdf
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/dna_bts_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/biology_syllabus_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b38.bin
48143224e8e90d7cd93c79d7bdc20bed726cd546ac65abeba533e61715624a69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B38 4584 bytes
font_01_sfnt_off00008b20.bin
26607a3eb0ded9f9a2e4ad6bd19e3f405a21da681ba232cbf3f3a984d658ee45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B20 5120 bytes
font_02_sfnt_off00009c61.bin
ebc6b982cf80c093f52d24c66fe5257f5e7e02d91771f04e1bb3a48ddb03dd20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C61 11348 bytes

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