Malicious PDF — malware analysis report

Static analysis result for SHA-256 c788644ed5520ea1…

MALICIOUS

PDF

41.0 KB Created: 2020-09-02 10:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58f944c903d998df9aeedfc0745b7ed1 SHA-1: 1194f7ee21f67f62d2d26564ac0a16c433c1f6cf SHA-256: c788644ed5520ea18c30f1e6892befa4f50af256005deecc94a63d5196286d31
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, masquerading as a datasheet, designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/wix?keyword=krohne+electromagnetic+flow+meter+datasheet. This technique is commonly used in phishing campaigns to distribute malware or harvest credentials. No scripts were extracted from this sample.

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=krohne+electromagnetic+flow+meter+datasheet
    • https://cdn.shopify.com/s/files/1/0431/1616/7319/files/71416720940.pdf
    • https://cdn.shopify.com/s/files/1/0433/8152/2599/files/24717605840.pdf
    • https://cdn.shopify.com/s/files/1/0432/3442/7047/files/lavurujumifug.pdf
    • https://static.usrfiles.com/ugd/19103d_6b4b4ced5e5146c1a3683638fe63b81c.pdf
    • https://static.usrfiles.com/ugd/c8683e_6f90f351d83e4937b57fb0dde63b302c.pdf
    • https://static.usrfiles.com/ugd/b916f4_be7856c28741478091133a599fc06226.pdf
    • https://static.usrfiles.com/ugd/b8c837_daf473557cde4217b9b9c2eee6f07215.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d9f82215ced4f888dc9a466c9f265a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e05324d297dc4267af379c80f65fd9a1.pdf
    • https://static.usrfiles.com/ugd/735424_bafaa668e9064bf5ac888e0f8e129e25.pdf
    • https://static.usrfiles.com/ugd/b8c837_d960f1f71f894325888f121507b199c6.pdf
    • https://static.usrfiles.com/ugd/575363_4ea0d0af69e544bc8a18704d57e21468.pdf
    • https://static.usrfiles.com/ugd/a48928_eec7169bac1c4ccbb967d32b80bb78dc.pdf
    • https://static.usrfiles.com/ugd/a58b01_bafeb327cca642a5bf744ddcf1dd5883.pdf
    • https://static.usrfiles.com/ugd/63d3ad_41834d9f7cd74a55918dec267a936142.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_off00006131.bin
cd3e31a4ba8af8e4d60740352b9f0e40ab81f7760fc12bfe9094b22c6ec6d9e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 5496 bytes
font_01_sfnt_off000073cd.bin
5f6cb8a27eba675a63dc0112ca25ee10b23196d4b05982438baaaffc620407fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73CD 10316 bytes

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