Malicious PDF — malware analysis report

Static analysis result for SHA-256 e773221a05f2dd97…

MALICIOUS

PDF

39.7 KB Created: 2020-08-29 13:23:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81bae744ed8289e5d1683e111fa9f6c5 SHA-1: d8de831bed0c52b47061b7d94cd2f6d416edeea4 SHA-256: e773221a05f2dd970e30e0e0b2a54295a1d122558cebbc0a871daa0053a39ae4
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, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=beginner+piano+books+for+6+year+old+pdf', is designed to redirect users to malicious infrastructure. The document also contains a large number of embedded links, many of which point to Shopify, suggesting a link farm or SEO poisoning tactic to increase visibility of the malicious link.

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/wix?keyword=beginner+piano+books+for+6+year+old+pdf
    • https://cdn.shopify.com/s/files/1/0453/9387/1016/files/carpe_diem_elsa_marpeau.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/amino_acid_hplc.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/57333600147.pdf
    • https://cdn.shopify.com/s/files/1/0435/4555/9189/files/duke_blue_devils_basketball_uniforms.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/saragorajoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51191810805.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/zaxufefezisonexebuvonuta.pdf
    • https://cdn.shopify.com/s/files/1/0434/3293/5574/files/vuwom.pdf
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/masalonumunibalizaxo.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_off000059b3.bin
d76e1f20e73c6d715c7e4ee0a0db22baf0ed3680799b781edd34fec713e04a04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B3 5720 bytes
font_01_sfnt_off00006d35.bin
039ded896a828e46698ce8194744527588eba27532a2940c1ecf5f28a235713e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D35 10908 bytes

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