PDF malware analysis — malicious · 02a7767132444ad7

MALICIOUS

PDF

45.9 KB Created: 2020-09-01 13:48:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a7050864a22e1c45d40a1a8370be43a2 SHA-1: 52585cd9d84e5402a5e30f3698519a4f32d3a5dd SHA-256: 02a7767132444ad713725cce028c8908fdcdf95463b6cef54fa2b17e1a05424d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious due to its inclusion of a link farm pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=el+clasico+2018+match+report, which is flagged as a malicious redirector. The PDF also contains numerous other links to external PDFs, suggesting a tactic to obscure the ultimate destination or to host malicious content across multiple sites.

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.cc/wix?keyword=el+clasico+2018+match+report
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/d94ae5_f8fd137cd230497a85da5e6a9ebcb70e.pdf
- https://static.usrfiles.com/ugd/b8c837_bb7553ecb1ec4367884471ef84d1f983.pdf
- https://static.usrfiles.com/ugd/b8c837_b7567d631f994d1c92a30438b87d2f49.pdf
- https://static.usrfiles.com/ugd/cd79e3_e1797faa3f0b4bd48632fc5d205cc39d.pdf
- https://static.usrfiles.com/ugd/d775a9_119b2db3ea31455b942c5848e6c5413a.pdf
- https://static.usrfiles.com/ugd/b8c837_565e142e74bb4bff947d7d6f5e03d185.pdf
- https://cdn.shopify.com/s/files/1/0430/2117/2897/files/usb2._0-_crw.pdf
- https://cdn.shopify.com/s/files/1/0472/3130/3845/files/mujavugafamamanarok.pdf
- https://cdn.shopify.com/s/files/1/0434/4843/4840/files/muxixibebufebaket.pdf
- https://cdn.shopify.com/s/files/1/0438/3657/1805/files/amlodipine_mechanism_of_action.pdf
- https://cdn.shopify.com/s/files/1/0444/3032/7975/files/90841652600.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_off00007631.bin` `963bf338defcd8975f8f1878240d9560cfc89599c854b2e30527e442e69778dd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7631	5652 bytes
`font_01_sfnt_off00008938.bin` `20ece0b666fa92901177fde2dbbed33d80b2e13e8f27bd40928446bf34d67269`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8938	9940 bytes

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