Malicious PDF — malware analysis report

Static analysis result for SHA-256 b539496fbfdfdf74…

MALICIOUS

PDF

49.8 KB Created: 2020-08-29 10:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8042c19e110885ce7f59a3cd6fcae718 SHA-1: ff397ed8730177f1b21afc0bca634ef2077ee934 SHA-256: b539496fbfdfdf74207c90890a17e34f43b87acac2877053d748a8aa1f1e76b0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=expresion+y+apreciacion+visual', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm and a malicious redirector indicates a likely phishing or malware distribution attempt.

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=expresion+y+apreciacion+visual
    • https://static.usrfiles.com/ugd/b8c837_9f6228963cec4c98987791ec670a5623.pdf
    • https://static.usrfiles.com/ugd/b8c837_7585e1ec8383488db84ed44e861f91d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd518353262340a5935270e5658c08b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cdc3a31f4984d389a8f73a4105bacf2.pdf
    • https://static.usrfiles.com/ugd/b8c837_39f0f66d1d6e4fa6876cafb002f957c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_84a0b93aa568496e8e1fa3454ffecf22.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/44058085631.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7680/files/40340457042.pdf
    • https://cdn.shopify.com/s/files/1/0433/5435/7910/files/53547316411.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/inorganic_chemistry_notes.pdf
    • https://cdn.shopify.com/s/files/1/0440/2026/9221/files/pafojex.pdf
    • https://static.usrfiles.com/ugd/b8c837_66257352828f40de9e1ca348b0d99223.pdf
    • https://static.usrfiles.com/ugd/b8c837_0509c879d441417ba6ecb65cac80151a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b2631fa78df4060879b07a41124d453.pdf
    • https://static.usrfiles.com/ugd/b8c837_88337e4664b04b30ac83f69ffabd745e.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_off00006d02.bin
f498cdefcec9895a7159a7a2c1b52242fc32b6f476e3a93dc3157464e8071793		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D02 5112 bytes
font_01_sfnt_off00007e80.bin
976257d11c70dad98a353212e341c176023d46cd00d09ed1cdd534aba65e5f52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E80 2356 bytes
font_02_sfnt_off000088a8.bin
f4c2167fffe1cb73e5dbd181d84adc359b2f62c0889dfc3b37440626b31b0f6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A8 15572 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.