PDF malware analysis — malicious · b7d426ebca2e5045

MALICIOUS

PDF

36.6 KB Created: 2020-08-31 18:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aeb7918b60485fc4fd9465523a49cd1c SHA-1: 823f73723682cb0822fcc8c3dbc891b2e07866cd SHA-256: b7d426ebca2e5045cd63a3073f44b662a12f59b60065685c9554908f5c28c0ae

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, many of which point to a redirector service. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to 'aquatic animals hd images free'. This suggests a phishing or redirection attack aimed at leading users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=aquatic+animals+hd+images+free
- https://static.usrfiles.com/ugd/8d57bd_6ac47b8441a548d4a703800d357d2dce.pdf
- https://static.usrfiles.com/ugd/dc98cc_f91e1f075c054a6b995966a6305eb697.pdf
- https://static.usrfiles.com/ugd/b8c837_4de4d67c5a644ab482c24df1dd9a1e9e.pdf
- https://static.usrfiles.com/ugd/98e298_b1da8523855a4e9992db2ffa013e40be.pdf
- https://static.usrfiles.com/ugd/21a131_04dd793119724e9f8073020eec838dd1.pdf
- https://static.usrfiles.com/ugd/b8c837_80c93bb4d72743eb9c31383b59dbb8ec.pdf
- https://static.usrfiles.com/ugd/b8c837_882974bfd91d4483abc4bc256aa23e76.pdf
- https://static.usrfiles.com/ugd/b8c837_f51ac665798844559ba0fad75a12b8c1.pdf
- https://static.usrfiles.com/ugd/b8c837_5a4c71da2b7344d285032b6f52991236.pdf
- https://static.usrfiles.com/ugd/b8c837_5ab1b82ed94e4ee587a8b5fe8d80a4df.pdf
- https://static.usrfiles.com/ugd/b8c837_ba25675338d446c28dc32b150b01e924.pdf
- https://static.usrfiles.com/ugd/b8c837_a8a5c00ffe6a4e989d73a36d8f216866.pdf
- https://static.usrfiles.com/ugd/b8c837_ad8ec77c1d674a20b193146279898101.pdf
- https://static.usrfiles.com/ugd/724bd4_31a69a1a08f644f3b6a6269524ef8766.pdf
- https://static.usrfiles.com/ugd/a6e5e9_1dc2cbcff1aa41d199283e2049a89759.pdf
- https://static.usrfiles.com/ugd/10e3af_8863332f3c4b49b7ad9f0a4068e26d9d.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_off00004630.bin` `9fcb35ffdaa5f9f9651dfe20a9114e552473be36fac453ff16400797c4531b91`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4630	5320 bytes
`font_01_sfnt_off00005807.bin` `1090f80d27b91c30f4b8565c90bcfee2930b9fbc6b553290ca3c926cdb8514ae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5807	9108 bytes
`font_02_sfnt_off00007734.bin` `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7734	4324 bytes

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