Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82147ff98273e6b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 02:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc48ee75bfbe4adf69d8c27ec8aaedf0 SHA-1: 08bf452bf8955ccc67e3a02c8d0441f2c216c1d9 SHA-256: e82147ff98273e6be03eb212eb88fa61c83800b6c23570b90977c71b915b650a
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to direct users to malicious sites. One of the primary links, 'https://ttraff.ru/wix?keyword=boulder+county+clerk+of+court', is flagged as a malicious redirector. This suggests the document's purpose is to lead users to potentially harmful content through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=boulder+county+clerk+of+court
    • https://static.usrfiles.com/ugd/bfbc46_48a73cd60eea46a79b3ff99454d22661.pdf
    • https://static.usrfiles.com/ugd/9cb927_d5649b9e85e94680a21b5f7eb0572abe.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2e86cd413ae45dab10e03ad0104040a.pdf
    • https://static.usrfiles.com/ugd/b8c837_e970a08bb34040f18b03cb4b73bfd364.pdf
    • https://static.usrfiles.com/ugd/a18aa6_eb828d0e03e548bfb987004c2486fceb.pdf
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/wisojaxibonorupif.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2298079133140999817f0eb7840f75a.pdf
    • https://static.usrfiles.com/ugd/0df15e_e8e9b80735aa43aa9666647667a436e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_623b77815142466584cc69fe5b4dead3.pdf
    • https://static.usrfiles.com/ugd/cd79e3_dc7f597e215847d1820848ff41f74ff1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f66acebd9c5a44d2b41c188da780c883.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_off00005fb9.bin
3300106d58554f74810c28b55762914d7242117ad733058382a44abacef44365		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 4840 bytes
font_01_sfnt_off00007048.bin
2e7b5d007459286956356a7452f80f88580a35a6bdd93f486815620056a5e511		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7048 10032 bytes

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