PDF malware analysis — malicious · 6ba2196d9f5ccdd3

MALICIOUS

PDF

44.8 KB Created: 2020-08-29 03:26:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2d875e898f4617883d5e05ac6981134b SHA-1: 67ab09b95689cbbccd85e8d268e41b4b7ad114a0 SHA-256: 6ba2196d9f5ccdd3768095eb21d5c911f4b9a33e05baea0fbb277a092a86eb57

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a link farm designed to manipulate search engine results. One prominent link directs to `https://ttraff.ru/wix?keyword=rick+warren+bible+study+methods`, which is flagged as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious or unwanted sites, likely as part of an SEO poisoning or traffic generation scheme.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=rick+warren+bible+study+methods
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_67212efc73d74239844be4f70bcf6f48.pdf
- https://static.usrfiles.com/ugd/b8c837_c8248b4693e04bb9804f58e2321b17a5.pdf
- https://static.usrfiles.com/ugd/b8c837_b9d5f0e33d024f5fb317caa146eee7c3.pdf
- https://static.usrfiles.com/ugd/b8c837_15e9eb2a86294556bd47030af114e33a.pdf
- https://static.usrfiles.com/ugd/b8c837_87d00bb687ca4e67b4ae52a38c2d35ef.pdf
- https://static.usrfiles.com/ugd/b8c837_75f2379b2b204ca4b35a4f382879b9ca.pdf
- https://static.usrfiles.com/ugd/b8c837_23cc281dbdae4dbdbe34c9fb66888ff6.pdf
- https://static.usrfiles.com/ugd/b8c837_7c0483a44233446fa93c17cea1211680.pdf
- https://static.usrfiles.com/ugd/b8c837_5d89034d119d48c48fec966aeb7b236a.pdf
- https://static.usrfiles.com/ugd/b8c837_b588e040d72f4c9bb383a3954987327b.pdf
- https://static.usrfiles.com/ugd/b8c837_2cce5fc364844c828ead48127fa3a40c.pdf
- https://static.usrfiles.com/ugd/b8c837_136a7fb3610b45b89b3d2de77bad39f3.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006fe7.bin` `987357eff2bf75b1e68aeb51d20c3019f62f1a5501a2dbf10df6e4f12f8b4d9a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FE7	5584 bytes
`font_01_sfnt_off000082ca.bin` `3be18fa1cf4986398da25784ba1510dd8806cf09ca02540cfe648e06a2a69acf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82CA	10744 bytes

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