PDF malware analysis — malicious · 99929e66834466f6

MALICIOUS

PDF

88.4 KB Created: 2020-08-29 09:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c880a91d155295ef3f21ed3f18f0572 SHA-1: 1bbe8283d4aa6fe4e3757b912f87561a14e897a8 SHA-256: 99929e66834466f60db1f1202b61430d6ccae6ecf685440473b6403340b572de

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of embedded links, likely for SEO manipulation or to obscure malicious destinations. The ML classifier strongly supports maliciousness. The primary IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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.com/wix?keyword=el+silmarillion+resumen
- https://static.usrfiles.com/ugd/b8c837_d49cddcac9fe473ba4c0d60ba5c2a61f.pdf
- https://static.usrfiles.com/ugd/b8c837_2dba0c823b7a41fc9f1d03463ff52488.pdf
- https://static.usrfiles.com/ugd/b8c837_d422ec1068354474a274f0a8a3d3554d.pdf
- https://static.usrfiles.com/ugd/b8c837_e320280654c84fb89998e5a5cb402258.pdf
- https://static.usrfiles.com/ugd/b8c837_44ae3c7fc079487186aabe4770e622f2.pdf
- https://static.usrfiles.com/ugd/b8c837_8f2fc233092a431facb0184f681c8f3f.pdf
- https://static.usrfiles.com/ugd/b8c837_cb47b5f1d4014dbdb96ac6e2fda0fb45.pdf
- https://static.usrfiles.com/ugd/b8c837_3823b0cfa5174fe4a4bd80fdbc961c84.pdf
- https://static.usrfiles.com/ugd/b8c837_fa1ed2993df2487d960fe704b1703569.pdf
- https://static.usrfiles.com/ugd/b8c837_05a263a724ad4646896366ea5eb67207.pdf
- https://static.usrfiles.com/ugd/b8c837_be1bd70a8f0e42aeadec758b1412f293.pdf
- https://static.usrfiles.com/ugd/b8c837_032545bc579f4844a2adcab88841ae67.pdf
- https://static.usrfiles.com/ugd/b8c837_752b1aaa1f574dcb93a3fbfb7c4d109f.pdf
- https://static.usrfiles.com/ugd/b8c837_f813b776b3b2450196a554948a86c5eb.pdf
- https://static.usrfiles.com/ugd/b8c837_db9f3a9a24f44c1f9b25eea88cc6337d.pdf
- https://static.usrfiles.com/ugd/b8c837_f45e0c67bf6d4144944e76151606cdb0.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00011468.bin` `cca89896ca95eaf7dda25a8f8ad6fc4cb43beb860764ff2ca36dfc208a77738c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11468	4588 bytes
`font_01_sfnt_off000123ca.bin` `fa9fb2adce0d678fcb23f095351a3c4c022ef2f9af8f1e0c2bdd4d286161b6d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123CA	9920 bytes
`font_02_sfnt_off000145c7.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x145C7	4324 bytes

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